fix: add --changed flag support to vitest list command (fix #8270)

[haakonjackfloat]

Description

This PR fixes a bug where the vitest list --changed command was ignoring the --changed flag and showing all tests instead of only those affected by changed files. This was inconsistent with the behavior of the regular vitest --changed command, which correctly filters tests based on git changes.

What this PR solves:

• The --changed flag now works correctly with the vitest list command
• Users now see only tests that would be affected by their changes when using vitest list --changed

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• It's really useful if your PR references an issue where it is discussed ahead of time. If the feature is substantial or introduces breaking changes without a discussion, PR might be closed.
  • References issue --changed flag is ignored when running vitest list --changed #8270 where the bug was reported and discussed
• Ideally, include a test that fails without this PR but passes with it.
  • Added comprehensive test suite in test/cli/test/list-changed.test.ts with 5 test cases that verify the fix works correctly
• Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.
  • No changes to pnpm-lock.yaml - only added test files and modified existing code

Tests

• Run the tests with pnpm test:ci.
  • All tests pass including the new test cases
  • Manual testing confirmed the fix works as expected

Documentation

• If you introduce new functionality, document it. You can run documentation with pnpm run docs command.
  • No new functionality introduced - this is a bug fix that makes existing functionality work correctly
  • The --changed flag was already documented in the CLI docs, it just wasn't working with the list command

Changesets

• Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.
  • Commit message follows convention: fix: add --changed flag support to vitest list command (fix #8270)
  • PR title should be: fix: add --changed flag support to vitest list command

[sheremet-va]

I think the expected behaviour is that this config extends the original one, not overrides it. It seems like a bug that it doesn't support all other options

[haakonjackfloat]

Ah, good to know! I'll update accordingly :)

[haakonjackfloat]

@sheremet-va I've updated collectCliOptionsConfig to inherit everything from cliOptionsConfig. I also tweaked the description for changed to be more consistent with the json and filesOnly options (e.g. changing Run tests to Print tests)