batches: Display reattach changeset

Created by: Piszmog

Closes #36359 (closed)

When an existing changeset is completely detached (not associated with any batch changes) and reattached to a change change, it would show up in the UI without an associated action/operation and the stats (in the banner) were un changed.

This PR does the following,

• Adds a new ChangesetSpecOperation called REATTACH
• Added a Reattach stat to the banner and a reattach operation is an addition (added) stat
• Updated DeterminePlan to take a "current changeset" so there is something to compare against to know if a changeset is being reattached
  • Rewire modifies changesets into a wanted state, so needed a way to know what changed
• Bonus: Fixed some variable and package naming collisions
• Bonus: Updated PreviewActions.tsx to use wildcard Tooltip since data-tooltip is deprecated

Test plan

Go Unit tests, existing storybook, typescript unit tests, and manual testing (see screenshot below).