Fix: Enable tabbing to tag remove buttons (#8002)
* Fix tag keyboard navigation to allow tabbing to remove buttons
* fix lint
* Add more integration level tests and stories, fix controls
* fix case where tabbing moves to prev/next clear button instead of moving out of collection
* get rid of extraneous tree walker
---------
Co-authored-by: Kiril Matsiuk <Kyrylo.Matsiuk@thomsonreuters.com>
Co-authored-by: Yihui Liao <44729383+yihuiliao@users.noreply.github.com>
Co-authored-by: Robert Snow <rsnow@adobe.com>
Co-authored-by: Robert Snow <snowystinger@gmail.com>
Co-authored-by: Daniel Lu <dl1644@gmail.com>
