[Glitch] Fix modal items cannot scroll on touch devices

Port d763d39d26 to glitch-soc

app/javascript/flavours/glitch/features/ui/components/actions_modal.js

@@ -114,7 +114,7 @@ export default class ActionsModal extends ImmutablePureComponent {
       <div className='modal-root__modal actions-modal'>
         {status}
 
-        <ul>
+        <ul className={classNames({ 'with-status': !!status })}>
           {this.props.actions.map(this.renderAction)}
         </ul>
       </div>

app/javascript/flavours/glitch/styles/components/modal.scss

@@ -621,6 +621,11 @@
   ul {
     overflow-y: auto;
     flex-shrink: 0;
+    max-height: 80vh;
+
+    &.with-status {
+      max-height: calc(80vh - 75px);
+    }
 
     li:empty {
       margin: 0;