TINYMCE-14795: Fix mouse reset code

[TheSpyder]

Related Ticket: TINYMCE-14795

Description of Changes:

• We've long had mouse reset code in bedrock, but it had two problems
  1. It was scoped to Chrome browsers
  2. It only activates on test start, so the change in 15.0.0 to reduce network traffic accidentally bypassed it
• The code is now enabled for all browsers
• On the client, a wrapper around XHR detects when mouse events are used (our test library doesn't use fetch for this) and sets a flag so the next test sends a start event to reset the mouse
• to avoid this causing extra spam to the server, the 30s result pings are included in test starts now

This should fix our build failures on Firefox 153, which appears to have changed something about the mouse hover code.

Pre-checks:

• Changelog entry added
• package.json versions have not been changed (done by Lerna on release)
• Tests have been added (if applicable)

Before merging:

• Ensure internal dependencies are on appropriate versions
  • For stable releases, all dependencies must be stable
  • For release candidates, all dependencies must be release candidates or stable