Fix: URL Encode Groupd IDs for external team sync (#20280)

* Fix: URL Encode Group IDs for external team sync

External Group IDs can have special characters. Encode them to make them
URL-safe.

public/app/features/teams/state/actions.ts

@@ -149,7 +149,7 @@ export function addTeamGroup(groupId: string): ThunkResult<void> {
 export function removeTeamGroup(groupId: string): ThunkResult<void> {
   return async (dispatch, getStore) => {
     const team = getStore().team.team;
-    await getBackendSrv().delete(`/api/teams/${team.id}/groups/${groupId}`);
+    await getBackendSrv().delete(`/api/teams/${team.id}/groups/${encodeURIComponent(groupId)}`);
     dispatch(loadTeamGroups());
   };
 }