fix(test): omit reason from event if undefined

Signed-off-by: Akos Kitta <[email protected]>

Author: Akos Kitta

arduino-ide-extension/src/browser/boards/boards-service-provider.ts

@@ -387,7 +387,11 @@ export class BoardsServiceProvider
       this._boardsConfig.selectedPort = event.selectedPort;
     }
 
-    this.boardsConfigDidChangeEmitter.fire(Object.assign(event, { reason }));
+    if (reason) {
+      event = Object.assign(event, { reason });
+    }
+
+    this.boardsConfigDidChangeEmitter.fire(event);
     this.refreshBoardList();
     this.saveState();
     return true;