fix(resolver): restore tsconfig files as file dependencies

[stormslowly]

Reverts #291.

Why

#291 stopped add_file_dependency for tsconfig and its project references as a temporary workaround for memory usage in the consumer. The cost is correctness: tsconfig edits no longer invalidate watch builds, and the only test covering it (tsconfig_file_as_file_dependencies) had to be #[ignore]d.

The memory concern belongs on the consumer side (how the dependency set is stored per module), not here — the resolver should keep reporting what it actually read.

What

• restore the for dependency in &tsconfig.file_dependencies loop in resolve_tsconfig
• un-ignore tsconfig_file_as_file_dependencies

[Copilot]

Pull request overview

Restores tsconfig and project-reference file dependency reporting so watch builds invalidate correctly.

Changes:

• Re-enables tsconfig dependency propagation in src/lib.rs.
• Re-enables the corresponding regression test.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Summary
src/tests/tsconfig_project_references.rs	Re-enables dependency coverage.
src/lib.rs	Restores dependency reporting; introduces a critical downstream memory risk for large monorepos.

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[codspeed-hq]

Merging this PR will not alter performance

✅ 12 untouched benchmarks

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_{Comparing fix/restore-tsconfig-file-dependencies (d6a0b1d) with main (ebed1eb)}