Fix webview restart on keyboard changes (#2622) (#2624)

* The webview activities now handle keyboard|keyboardHidden|navigation
  configuration changes by keyboard connection changes, to avoid the
  activity restart which leads to frontend reload.

app/src/main/AndroidManifest.xml

@@ -275,7 +275,7 @@
 
         <activity
             android:name=".onboarding.OnboardingActivity"
-            android:configChanges="orientation|screenSize|keyboardHidden" />
+            android:configChanges="orientation|screenSize|keyboard|keyboardHidden|navigation" />
 
         <activity
             android:name=".settings.wear.SettingsWearActivity"
@@ -315,7 +315,7 @@
             android:supportsPictureInPicture="true"
             android:resizeableActivity="true"
             android:exported="false"
-            android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout" />
+            android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|keyboard|keyboardHidden|navigation" />
 
         <activity
             android:name=".settings.SettingsActivity"