Make use of new room canInvite helper

Author: t3chguy

src/components/views/rooms/MemberList.js

@@ -450,17 +450,7 @@ export default class MemberList extends React.Component {
         let inviteButton;
 
         if (room && room.getMyMembership() === 'join') {
-            // assume we can invite until proven false
-            let canInvite = true;
-
-            const plEvent = room.currentState.getStateEvents("m.room.power_levels", "");
-            const me = room.getMember(cli.getUserId());
-            if (plEvent && me) {
-                const content = plEvent.getContent();
-                if (content && content.invite > me.powerLevel) {
-                    canInvite = false;
-                }
-            }
+            const canInvite = room.canInvite(cli.getUserId());
 
             let inviteButtonText = _t("Invite to this room");
             const chat = CommunityPrototypeStore.instance.getSelectedCommunityGeneralChat();

src/components/views/rooms/NewRoomIntro.tsx

@@ -100,15 +100,8 @@ const NewRoomIntro = () => {
             });
         }
 
-        let canInvite = inRoom;
-        const powerLevels = room.currentState.getStateEvents(EventType.RoomPowerLevels, "")?.getContent();
-        const me = room.getMember(cli.getUserId());
-        if (powerLevels && me && powerLevels.invite > me.powerLevel) {
-            canInvite = false;
-        }
-
         let buttons;
-        if (canInvite) {
+        if (room.canInvite(cli.getUserId())) {
             const onInviteClick = () => {
                 dis.dispatch({ action: "view_invite", roomId });
             };