Updates on the FocusLock and Dialog

[GomezIvann]

Checklist

• The build process is done without errors. All tests pass in the /lib directory.
• Self-reviewed the code before submitting.
• Meets accessibility standards.
• Added/updated documentation to /website as needed.
• Added/updated tests as needed.

Purpose
The focus was not following the tabbing sequence in Dialog and Alert components when there was a component with the new Tooltip. It was an issue with the Focus Lock internal component.

Description

• Fixed the issue. The MutationObserver from the FocusLock component was executing itself each time the focus changed, due to a flag of the observer ({ attributes: true }). Now it is only executing when the tree inside the component changes, which is the expected behavior.
  • Fixed some usual issues with the Focus Lock like the Date Input calendar focus return on close, added focus guards etc.
  • New tests.
• Change Dialog's prop isCloseVisible to closable, to match the new Alert approach for this same property.