mgr/dashboard: fix MDS charts are stacked in Filesystems page

mgr/dashboard: fix MDS charts are stacked in Filesystems page

Also include some UI enhancements:
- Fix MDS chart container is not aligned to other components.
- Show header on client table.

Fixes: https://tracker.ceph.com/issues/37579
Signed-off-by: Kiefer Chang <kiefer.chang@suse.com>
(cherry picked from commit a3e76ac5f5cf56f830fd2ae9d2e2ac4585195fc2)

Conflicts:
	src/pybind/mgr/dashboard/frontend/src/app/ceph/cephfs/cephfs-clients/cephfs-clients.component.html
	src/pybind/mgr/dashboard/frontend/src/app/ceph/cephfs/cephfs-detail/cephfs-detail.component.html

files above are renamed, their paths in mimic are:
	src/pybind/mgr/dashboard/frontend/src/app/ceph/cephfs/clients/clients.component.html
	src/pybind/mgr/dashboard/frontend/src/app/ceph/cephfs/cephfs/cephfs.component.html