Avoid potential bugs

Author: De-Panther

Build/webxr.js

@@ -680,6 +680,7 @@
 
     session.requestReferenceSpace(refSpaceType).then((refSpace) => {
       session.refSpace = refSpace;
+      this.BrowserObject.resumeAsyncCallbacks();
       this.BrowserObject.mainLoop.resume();
     });
   }

Packages/webxr/Hidden~/WebGLTemplates/WebXR/webxr.js

@@ -680,6 +680,7 @@
 
     session.requestReferenceSpace(refSpaceType).then((refSpace) => {
       session.refSpace = refSpace;
+      this.BrowserObject.resumeAsyncCallbacks();
       this.BrowserObject.mainLoop.resume();
     });
   }

Packages/webxr/Hidden~/WebGLTemplates/WebXRFullView/webxr.js

@@ -680,6 +680,7 @@
 
     session.requestReferenceSpace(refSpaceType).then((refSpace) => {
       session.refSpace = refSpace;
+      this.BrowserObject.resumeAsyncCallbacks();
       this.BrowserObject.mainLoop.resume();
     });
   }