MDL-77658 theme: Fixed RTL manage course categories menu

fixed course checkboxes that appears on the categories menu on RTL

theme/boost/scss/moodle/course.scss

@@ -930,6 +930,9 @@ span.editinstructions {
             border-left: calc(#{$list-group-border-width} + 5px) solid map-get($theme-colors, 'primary');
             padding-left: calc(#{$list-group-item-padding-x} - 5px);
         }
+        &:hover {
+            z-index: 2;
+        }
     }
 
     .item-actions {

theme/boost/style/moodle.css

@@ -28681,6 +28681,9 @@ span.editinstructions .alert-link {
   border-left: calc(1px + 5px) solid #0f6cbf;
   padding-left: calc(1.25rem - 5px);
 }
+#course-category-listings .listitem:hover {
+  z-index: 2;
+}
 #course-category-listings .item-actions {
   margin-right: 1em;
   display: inline-block;

theme/classic/style/moodle.css

@@ -28681,6 +28681,9 @@ span.editinstructions .alert-link {
   border-left: calc(1px + 5px) solid #0f6cbf;
   padding-left: calc(1.25rem - 5px);
 }
+#course-category-listings .listitem:hover {
+  z-index: 2;
+}
 #course-category-listings .item-actions {
   margin-right: 1em;
   display: inline-block;