fix(ui): add errors and draft state (*) to the code editor

[userquin]

Description

We have a regression somewhere, maybe updating Vue dependency, I'm not sure. The problem is that changes included in these 2 PR missing in current version:

• https://github.com/vitest-dev/vitest/pull/1131
• https://github.com/vitest-dev/vitest/pull/1039

This PR adds the draft indicator and the line error to the code editor: tested with test/core and test/browser (only preview).

This PR also includes:

• codemirror optimizations when registering/unregistering the errors entries to remove memory leaks: looks like destroy method is missing in v6
• changes the cursor to wait when saving the file: Video showing the cursor
• registers the span listener to open the file in the editor (at line and column error), missing in the original PR #1131

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.
• [ ] Ideally, include a test that fails without this PR but passes with it.
• [x] Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.

Tests

• [x] Run the tests with pnpm test:ci.

Documentation

• [ ] If you introduce new functionality, document it. You can run documentation with pnpm run docs command.

Changesets

• [x] 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:.

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