Support global.json's rollForward latest* variants

[js6pak]

Description:
This PR is a cleaned up version of #481, which fixes 2 issues:

1. In the original npm run build wasn't rerun so dist is stale there
2. The tests that were added never passed successfully

There are a few additional commits in this PR:

1. babb40f which fixes the 6 minute delay on windows runners caused by clear-toolcache.ps1
2. d9dae35 makes sure tests run even before the PR workflow is manually accepted, this can be dropped if needed

Related issue:
Fixes #448, closes #481

Check list:

• Mark if documentation changes are required.
• Mark if tests were added or updated to cover the changes.

[js6pak]

@HarithaVattikuti

[js6pak]

@HarithaVattikuti bump

[priyagupta108]

Hi @js6pak,

Thank you for this contribution, this fills an important gap in global.json support! Here are a few review points:

1. Rebase onto latest main. This will ensure your changes are up-to-date with the current codebase.

2. Revert the workflow trigger changes. The branch filter removals across the CI workflow files (.github/workflows/*.yml) appear unrelated to this feature. Please revert those so they remain as-is.

Once those are addressed, happy to take another look. Thanks!

[js6pak]

@priyagupta108 I've rebased the PR, so you can take a look. Workflow trigger changes are needed for external contributors to test whether their changes pass CI, so I'd recommend keeping them, but if you want to drop it, I'd do it after making sure you don't want any other changes to the actual feature (so I can test that CI works after requested changes :v).

[js6pak]

@priyagupta108 Note the Basic validation workflow is broken on the main branch: https://github.com/actions/setup-dotnet/actions/workflows/basic-validation.yml?query=branch%3Amain, so it's unrelated to this PR.

[priyagupta108]

Hi @js6pak, thanks for the quick rebase!

A few follow-up items to address:

1. __tests__/e2e-test-csproj changes: Migrating the entire test project from MSTest to Newtonsoft.Json just to support a single latestMinor test case feels like a significant change, especially since that test depends on .NET Core 3.1, which has been EOL since December 2022. Would you consider reverting the migration and dropping the latestMinor test instead?

2. actions/checkout version: Some of the new jobs added in e2e-tests.yml still use actions/checkout@v3. Could these be updated to actions/checkout@v6 to match the rest of the workflow?

3. Branch filters: The current branch filters (main, releases/*) are intentional because they prevent CI from running on every push to every branch, which helps keep workflow costs and noise low for the repo. Could you please drop this change from the PR once your testing is complete?

Once those are addressed, happy to continue the review. Thanks!