[alan-agius4]

When sourceMap.scripts is enabled, injectDebugIds appends a //# debugId=<uuid> comment derived from the chunk's source map content to each emitted browser JS file after chunk optimization.

While esbuild includes source map content when computing output chunk hashes, optimizeChunks strips the esbuild hash and relies on Rolldown to compute [hash] for optimized chunks. Because Rolldown only hashed the JS code and not the input source maps, a source change that only altered the source map (such as adding or removing type definitions or comments that shifted line numbers) changed the debugId bytes in the emitted JS file and its SRI hash in index.html without changing the chunk's filename.

Implement augmentChunkHash in the chunk optimizer's angular-bundle plugin to include the input source map hashes when source maps are enabled, and invalidate cached BuildOutputFile hashes when contents are mutated.

Closes #34574

[gemini-code-assist]

Code Review

This pull request ensures that optimized chunk filenames are updated when source map changes occur, even if the emitted JS code remains unchanged. This is achieved by augmenting the chunk hash with module source map hashes in the chunk optimizer and updating convertOutputFile to dynamically calculate and cache file hashes when contents change. A test case has been added to verify this behavior. The review feedback suggests improving type safety in bundler-files.ts by using a type assertion and nullish coalescing when initializing cachedHash to prevent potential TypeScript compilation errors under strict null checks.