Make uses of AddressPickerDialog static dialogs

Fixes https://github.com/vector-im/riot-web/issues/10603

Static dialogs are ones that stay open underneath other dialogs, like the terms of service prompt. This is how user/room settings operate.

src/components/structures/GroupView.js

@@ -120,7 +120,7 @@ const CategoryRoomList = createReactClass({
                     });
                 });
             },
-        });
+        }, /*className=*/null, /*isPriority=*/false, /*isStatic=*/true);
     },
 
     render: function() {
@@ -297,7 +297,7 @@ const RoleUserList = createReactClass({
                     });
                 });
             },
-        });
+        }, /*className=*/null, /*isPriority=*/false, /*isStatic=*/true);
     },
 
     render: function() {