Fix block code styling in rich text editor (#10246)

Author: artcodespace

res/css/views/rooms/wysiwyg_composer/components/_Editor.pcss

@@ -88,17 +88,17 @@ limitations under the License.
             border-radius: 2px;
         }
 
-        code {
+        code:not(pre *) {
             font-family: $monospace-font-family !important;
             background-color: $inlinecode-background-color;
             border: 1px solid $inlinecode-border-color;
             border-radius: 4px;
             padding: $spacing-2;
-        }
 
-        code:empty {
-            border: unset;
-            padding: unset;
+            &:empty {
+                border: unset;
+                padding: unset;
+            }
         }
     }