Fix color for dark mode

libs/ui/src/lib/activities-filter/activities-filter.component.scss

@@ -8,10 +8,12 @@
       border-top: 0 solid transparent !important;
     }
 
-    .mat-spinner circle {
+    .mat-spinner {
+      circle {
         stroke: rgba(var(--dark-dividers));
       }
     }
+  }
 
   .mat-chip {
     cursor: pointer;
@@ -24,7 +26,11 @@
     color: rgba(var(--light-primary-text));
   }
 
-  .mat-spinner circle {
+  ::ng-deep {
+    .mat-spinner {
+      circle {
         stroke: rgba(var(--light-dividers));
       }
     }
+  }
+}