电脑端摄像头无法正常使用得情况下，限制开启摄像头

src/page/Meeting/index.tsx

@@ -1415,6 +1415,19 @@ const Meeting: React.FC = () => {
             duration: 60,
             key: 'cameraTemporarily'
           });
+        } else if (_state === 3) {
+          await PostOpenCamera({
+            roomNum: state.channelId,
+            uid: userInfo.uid,
+            enableCamera: false
+          })
+          message.error({
+            content: <div>请检查摄像头是否正常工作，检查摄像头是否被其他应用占用，或者尝试重新加入频道，<span style={{ color: '#606fc7', cursor: 'pointer' }} onClick={() => {
+              stupWizardRef.current.changeModal(1);
+            }}>前往修改摄像头</span></div>,
+            duration: 60,
+            key: 'cameraTemporarily'
+          });
         }
       },
       onTokenPrivilegeWillExpire: async (connection: RtcConnection, _token: string) => {