Fix: Prevent NPE when toBack=true and user taps before preview is ready (Android)#414

ryaa merged 2 commits intocapacitor-community:mastercapacitor-community/camera-preview:masterfrom

ryaa:bugfix/1514-null-pointer-exception-cameraryaa/camera-preview:bugfix/1514-null-pointer-exception-cameraCopy head branch name to clipboard