fix: start monitor with the inferred board

Author: Akos Kitta

Diff for: arduino-ide-extension/src/browser/monitor-manager-proxy-client-impl.ts

@@ -11,6 +11,7 @@ import { BoardIdentifier, PortIdentifier } from '../common/protocol';
 import {
   BoardListItem,
   boardListItemEquals,
+  getInferredBoardOrBoard,
 } from '../common/protocol/board-list';
 import {
   Monitor,
@@ -166,13 +167,18 @@ export class MonitorManagerProxyClientImpl
         );
     }
 
-    if (!this.lastConnectedBoard || !this.lastConnectedBoard.board) {
+    if (!this.lastConnectedBoard) {
+      return;
+    }
+
+    const board = getInferredBoardOrBoard(this.lastConnectedBoard);
+    if (!board) {
       return;
     }
     try {
       this.clearVisibleNotification();
       await this.server().startMonitor(
-        this.lastConnectedBoard.board,
+        board,
         this.lastConnectedBoard.port,
         settings
       );