Release 5.1.9

[jkasten2]

✨ Enhancements

• Add AndroidManifest option to override In-App Messages gray overlay and dropshadow (Add AndroidManifest option to override In-App Messages gray overlay and dropshadow #2051)
  • <meta-data android:name="com.onesignal.inAppMessageHideGrayOverlay" android:value="true"/>
  • <meta-data android:name="com.onesignal.inAppMessageHideDropShadow" android:value="true"/>

🐛 Bug Fixes

• Fix for WorkManager not initialized crash (Fix for WorkManager not Initialized Crash  #2052)
• Fix don't re-create user on failed remove alias ([Fix] Don't re-create user on failed remove alias #2049)

🔧 Maintenance

• Never set OperationRepo.enqueue's flush to true ([Improvement] Never set OperationRepo.enqueue's flush to true #2055)
• Prevent operations added to queue while it's processing from being executed without delay ([Fix] Prevent operations added to queue while it's processing from being executed without delay #2053)

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