Minicard, show creator, defaultValue of schema and other code is now the same

client/components/cards/minicard.js

@@ -42,11 +42,7 @@ BlazeComponent.extendComponent({
     const board = this.data().board();
     let ret = false;
     if (board) {
-      ret =
-        board.allowsCreatorOnMinicard === null ||
-        board.allowsCreatorOnMinicard === undefined ||
-        board.allowsCreatorOnMinicard
-      ;
+      ret = board.allowsCreatorOnMinicard ?? false;
     }
     return ret;
   },

client/components/sidebar/sidebar.js

@@ -913,19 +913,11 @@ BlazeComponent.extendComponent({
   },
 
   allowsCreator() {
-    return (
-      this.currentBoard.allowsCreator === null ||
-      this.currentBoard.allowsCreator === undefined ||
-      this.currentBoard.allowsCreator
-    );
+    return this.currentBoard.allowsCreator ?? false;
   },
 
   allowsCreatorOnMinicard() {
-    return (
-      this.currentBoard.allowsCreatorOnMinicard === null ||
-      this.currentBoard.allowsCreatorOnMinicard === undefined ||
-      this.currentBoard.allowsCreatorOnMinicard
-    );
+    return this.currentBoard.allowsCreatorOnMinicard ?? false;
   },
 
   allowsMembers() {