Fix: harden ValidationInfo.data access for Pydantic 2.13 compat (#5763) #3553

Job	Run time
changes	6s
test-vscode	1m 1s
test-dbt-versions (1.7)	1m 50s
test-dbt-versions (1.3)	1m 35s
test-dbt-versions (1.8)	1m 36s
test-dbt-versions (1.4)	1m 33s
test-dbt-versions (1.5)	1m 32s
test-dbt-versions (1.6)	1m 41s
test-dbt-versions (1.9)	1m 39s
test-dbt-versions (1.10)	1m 49s
test-vscode-e2e	0s
cicd-tests-windows	11m 38s
migration-test	1m 28s
doc-tests	34s
ui-style	40s
style-and-cicd-tests (3.12)	23m 28s
style-and-cicd-tests (3.11)	23m 33s
style-and-cicd-tests (3.13)	23m 0s
style-and-cicd-tests (3.10)	23m 16s
style-and-cicd-tests (3.9)	22m 51s
ui-test	1m 21s
engine-tests-docker (trino)	8m 6s
engine-tests-docker (spark)	5m 35s
engine-tests-docker (mysql)	1m 37s
engine-tests-docker (risingwave)	2m 44s
engine-tests-docker (postgres)	2m 11s
engine-tests-docker (duckdb)	1m 39s
engine-tests-docker (clickhouse)	3m 2s
engine-tests-docker (mssql)	1m 48s
engine-tests-cloud (snowflake)	9m 39s
engine-tests-cloud (clickhouse-cloud)	9m 13s
engine-tests-cloud (databricks)	13m 0s
engine-tests-cloud (redshift)	6m 28s
engine-tests-cloud (bigquery)	19m 39s
engine-tests-cloud (gcp-postgres)	4m 28s
engine-tests-cloud (fabric)	25m 18s
engine-tests-cloud (athena)	20m 15s
	4h 40m 53s

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