Fix TagGroup maxRows layout issues (#4041)
* fix to factor in margins
* set a fixed height to flickering and layout shift
* address review comments
* add mock getComputedStyle to tests
* add back while condition
* don't always show one tag if width is constrained
* cleanup
* add text below container for resizing
* handle case of width smaller than button width
* fix collapsed height case
---------
Co-authored-by: Robert Snow <rsnow@adobe.com>
Co-authored-by: Devon Govett <devongovett@gmail.com>
