fix(Android): a crash on application restart after livesync changes (#6756)
fix(Android): a crash on application restart after livesync changes (#6756)

```
An uncaught Exception occurred on "main" thread.
com.tns.NativeScriptException:
Calling js method run failed

TypeError: Cannot read property 'getRootView' of undefined
File: file:///data/data/org.nativescript.preview/files/app/tns_modules/tns-core-modules/ui/frame/frame.js, line: 56, column:29
```
NativeScript/NativeScript,NativeScript/NativeScript,NativeScript/NativeScript,NativeScript/NativeScript,NativeScript/NativeScript