Fix TypeError crash in GraphLaTeX renderer when nodes/links are missing

[Trosper3]

problemData.nodes.map() threw "Cannot read properties of undefined (reading 'map')" whenever a frame arrived without a nodes or links array, crashing DFA/NFA Acceptance visualizations. Normalize both to [] before use, matching the same guard already in
StandardGraphSvgReact.js (the D3 graph renderer).

Fixes #168

[github-actions]

Redux Build System — CI Report

npm · commit 0d4f912

Operation	Status	Summary	Time
audit	❌	1 high	0.5s
format-check	❌	56 format · 31 import order	0.5s
lint	❌	25 errors, 41 warnings	7.2s
typecheck	⏭️	no tsconfig.json	—
unit-test	⏭️	no test script in package.json	—
build	✅	built local/redux_gui:ci · 234MB	60.3s
integration-test	✅	/api/health ready · 4 passed	7.0s
push	⏭️	not implemented	—

Overall: ❌ 2 passed · 3 failed · 3 skipped

❌ audit — 1 high

Severity	Location	Rule	Message
high	svgo@3.0.0 - 3.3.3	GHSA-2p49-hgcm-8545	SVGO removeScripts plugin leaves some executable scripts intact

❌ format-check — 56 format · 31 import order

Severity	Location	Rule	Message
error	Tools/Constants.js	format	needs formatting
error	Tools/ProblemInstanceParser.js	format	needs formatting
error	biome.json	format	needs formatting
error	components/ContributorCard.js	format	needs formatting
error	components/Quantum/QuantumCircuitVisualizer.js	assist/source/organizeImports	Sort these imports.
error	components/Quantum/QuantumCircuitVisualizer.js	format	needs formatting
error	components/Quantum/circuitUtils.js	format	needs formatting
error	components/Visualization/Graphvisualization.js	format	needs formatting
error	components/Visualization/GraphvizWrapper.js	assist/source/organizeImports	Sort these imports.
error	components/Visualization/QuantumCircuitVis.js	assist/source/organizeImports	Sort these imports.
error	components/Visualization/QuantumCircuitVis.js	format	needs formatting
error	components/Visualization/ReducedVisualization.js	format	needs formatting
error	components/Visualization/constants/VisColors.js	format	needs formatting
error	components/Visualization/constants/VisColorsArray.js	assist/source/organizeImports	Sort the exported names.
error	components/Visualization/constants/VisColorsArray.js	format	needs formatting
error	components/Visualization/openqasmToQText.js	format	needs formatting
error	components/Visualization/svgs/DynamicTableSvgReact.js	format	needs formatting
error	components/Visualization/svgs/LaTeXGraphSvgReact.js	format	needs formatting
error	components/Visualization/svgs/No_Viz_SVG.js	assist/source/organizeImports	Sort these imports.
error	components/Visualization/svgs/No_Viz_SVG.js	format	needs formatting
			… and 68 more

❌ lint — 25 errors, 41 warnings

Severity	Location	Rule	Message
error	components/Visualization/QuantumCircuitVis.js:152	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Problem.js:51	no-undef	'requestInfo' is not defined.
error	components/hooks/ProblemProvider/Problem.js:73	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Reducer.js:132	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Reducer.js:152	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Reducer.js:171	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Reducer.js:190	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Reducer.js:211	react-hooks/immutability	Error: Cannot access variable before it is declared
error	components/hooks/ProblemProvider/Reducer.js:215	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Reducer.js:51	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Reducer.js:74	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Solver.js:138	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Solver.js:24	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/hooks/ProblemProvider/Verifier.js:87	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/pageblocks/ProblemRowReact.js:154	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/pageblocks/ProblemRowReact.js:163	react-hooks/immutability	Error: This value cannot be modified
error	components/pageblocks/VerifyRowReact.js:46	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/pageblocks/VerifyRowReact.js:52	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/pageblocks/VisualizeRowReact.js:135	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
error	components/pageblocks/VisualizeRowReact.js:139	react-hooks/set-state-in-effect	Error: Calling setState synchronously within an effect can trigger cascading renders
			… and 46 more