Move ID error to favor class expression inference failure when present

[weswigham]

Removes a baseline diff without a backing issue from submoduleTriaged. Nonfunctional, but the special error for class expression inference failure is otherwise unused, so may as well use it.

[Copilot]

Pull request overview

Adjusts isolated-declarations diagnostics to prefer the dedicated “class expression inference failure” error when a variable initializer is a class expression, aligning outputs with upstream TypeScript and removing a previously-triaged baseline diff.

Changes:

• Report inference-fallback errors for class expression initializers via NewPseudoTypeInferredWithErrors, causing TS9022 to surface instead of the generic variable-annotation error.
• Update the submodule reference baseline for isolatedDeclarationErrorsClassesExpressions to match the corrected diagnostic.
• Remove the now-unneeded submoduleTriaged entry and its corresponding .diff file.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
internal/pseudochecker/lookup.go	Marks ClassExpression inference as an inferred-with-errors pseudo type so ID reports TS9022 at the class expression site.
testdata/baselines/reference/submodule/compiler/isolatedDeclarationErrorsClassesExpressions.errors.txt	Updates expected diagnostics to TS9022 + adjusted span to match the new behavior.
testdata/submoduleTriaged.txt	Drops the triage entry for the removed baseline diff.
testdata/baselines/reference/submoduleTriaged/compiler/isolatedDeclarationErrorsClassesExpressions.errors.txt.diff	Removes the triaged diff file since the port now matches the reference baseline.