Update permissions for editing open_to_all to match current backend

src/redux/studio-permissions.js

@@ -25,9 +25,9 @@ const selectCanDeleteCommentWithoutConfirm = state => selectIsAdmin(state);
 
 const selectCanFollowStudio = state => selectIsLoggedIn(state);
 
-// Matching existing behavior, only the creator is allowed to toggle comments.
+// Matching existing behavior, only admin/creator is allowed to toggle comments.
 const selectCanEditCommentsAllowed = state => selectIsAdmin(state) || isCreator(state);
-const selectCanEditOpenToAll = state => selectIsAdmin(state) || isManager(state);
+const selectCanEditOpenToAll = state => isManager(state);
 
 export {
     selectCanEditInfo,

test/unit/redux/studio-permissions.test.js

@@ -196,7 +196,7 @@ describe('studio comments', () => {
 
     describe('can set "open to all" on a studio', () => {
         test.each([
-            ['admin', true],
+            ['admin', false],
             ['curator', false],
             ['manager', true],
             ['creator', true],