mgr/dashboard: Hide ECP actions during ec pool edit

mgr/dashboard: Hide ECP actions during ec pool edit

Hides erasure profile actions during erasure pool edit, as all
actions are disabled anyway as they can't be used in edit mode.

This commit makes also sure that the used crush rule will be shown
during edit of an erasure pool and no crush rule selection is shown
during creation of an erasure code pool, as in most cases a new crush
rule will be created for the ec pool.

Fixes: https://tracker.ceph.com/issues/44371
Signed-off-by: Stephan Müller <smueller@suse.com>