[StaticWebAssets] Add the cache files to the list of written files so they get deleted during clean

[javiercn]

• Fix an issue when we need to ignore the cache.
• Make sure cache files are removed during dotnet clean.

[dotnet-policy-service]

Thanks for your PR, @@javiercn.
To learn about the PR process and branching schedule of this repo, please take a look at the SDK PR Guide.

[Copilot]

Pull Request Overview

This PR adds cache files to the list of written files so that they will be deleted during the clean process. Key changes include updating tests to assert that cache lists (CachedAssets and CachedCopyCandidates) are empty after property changes, clearing cache entries in the update method, and adding FileWrites entries in various targets to include the cache file paths.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test/Microsoft.NET.Sdk.Razor.Tests/StaticWebAssets/DiscoverStaticWebAssetsTest.cs	Updated the test to verify that the cache lists are empty post-update
src/StaticWebAssetsSdk/Tasks/DefineStaticWebAssets.Cache.cs	Clears CachedAssets and CachedCopyCandidates during TotalUpdate to reset cache state
src/StaticWebAssetsSdk/Targets/Microsoft.NET.Sdk.StaticWebAssets.targets	Added FileWrites for the project static web assets cache
src/StaticWebAssetsSdk/Targets/Microsoft.NET.Sdk.StaticWebAssets.JSModules.targets	Added FileWrites entries for various JS module cache paths
src/StaticWebAssetsSdk/Targets/Microsoft.NET.Sdk.StaticWebAssets.Compression.targets	Added FileWrites for the compressed static web assets cache

[javiercn]

/backport to release/9.0.3xx

[github-actions]

Started backporting to release/9.0.3xx: https://github.com/dotnet/sdk/actions/runs/15050229264