fix: prefer a phase-detection camera format for receipt capture

[OlimpiaZurek]

Explanation of Change

We choose the camera format by aspect ratio and resolution, and never look at autofocus. When several formats match equally well we just take whatever the device happened to list first, which can easily be a contrast-detection one. Contrast autofocus hunts back and forth to find focus and it's at its worst up close, which is exactly how people photograph receipts.

So once the format is chosen, we now look for an identical one, same dimensions and same frame rate, that uses phase-detection, and use that instead. Nothing else about the format changes.

This has to run after selection rather than as another useCameraFormat filter. The filters are weighted by position, so adding a fourth one reshuffles the first three and changes which format wins before autofocus even comes into it.

Android isn't affected. Vision Camera reports all of its focus-capable cameras as contrast-detection, so there's never a better one to switch to.

Fixed Issues

$ #100537
PROPOSAL:

Tests

1. Open the app, tap the + FAB, then Create expense, then Scan
2. Take a photo of a receipt at close range (roughly 15 to 20 cm) in indoor light
3. Verify the camera focuses and the receipt text is legible on the confirmation screen
4. Submit the expense and verify it appears in the report correctly

• Verify that no errors appear in the JS console

Offline tests

QA Steps

// TODO: These must be filled out, or the issue title must include "[No QA]."

same as tests

• Verify that no errors appear in the JS console

PR Author Checklist

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Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

[codecov]

Codecov Report

❌ Looks like you've decreased code coverage for some files. Please write tests to increase, or at least maintain, the existing level of code coverage. See our documentation here for how to interpret this table.

Files with missing lines	Coverage Δ
...RequestStepScan/components/Camera/index.native.tsx	67.27% <100.00%> (-1.15%)	⬇️
...ils/getReceiptCameraFormatFilters/index.android.ts	100.00% <100.00%> (ø)
...n/utils/getReceiptCameraFormatFilters/index.ios.ts	100.00% <100.00%> (ø)
.../utils/preferPhaseDetectionFormat/index.android.ts	100.00% <100.00%> (ø)
...Scan/utils/preferPhaseDetectionFormat/index.ios.ts	100.00% <100.00%> (ø)
...pScan/utils/getReceiptCameraFormatFilters/index.ts	0.00% <0.00%> (ø)
...StepScan/utils/preferPhaseDetectionFormat/index.ts	0.00% <0.00%> (ø)
... and 66 files with indirect coverage changes