mgr/dashboard:Fixed issue with clipboard icon

mgr/dashboard:Fixed issue with clipboard icon

- clipboard icon not displaying breaking several places
- cliboard icon on click gets filed primary green color losing the visibilty of icon. The icon now remain visible on click
- clipboard button for path and copy in tables on mouseover does not give `hand` but `cursor`. which was not ideal from a usability standpoint. This behavior has been updated to use the hand cursor making the interaction semantically correct and more intuitive for users.

Signed-off-by: Afreen Misbah <afreen@ibm.com>
(cherry picked from commit 1dd42e1a339ef4cf1f3253534646aa6c9342233d)

Conflicts:
       src/pybind/mgr/dashboard/frontend/src/app/shared/components/copy2clipboard-button/copy2clipboard-button.component.html