mgr/dashboard: Optimize css styles.css bundle

-  compresses the css bundle before sending to browser
-  this improves LCP value value as well

Fixes https://tracker.ceph.com/issues/72742

Signed-off-by: Afreen Misbah <[email protected]>

Author: afreen23

src/pybind/mgr/dashboard/module.py

@@ -147,6 +147,7 @@ def _configure(self):
                 'application/json',
                 'application/*+json',
                 'application/javascript',
+                'text/css',
             ],
             'tools.json_in.on': True,
             'tools.json_in.force': True,