Add mobile feature flags (#5629)

* Add mobile feature flags

* Update Constants.cs

Author: differsthecat

src/Core/Constants.cs

@@ -168,8 +168,9 @@ public static class FeatureFlagKeys
     public const string SingleTapPasskeyAuthentication = "single-tap-passkey-authentication";
     public const string EnablePMAuthenticatorSync = "enable-pm-bwa-sync";
     public const string PM3503_MobileAnonAddySelfHostAlias = "anon-addy-self-host-alias";
-
     public const string PM3553_MobileSimpleLoginSelfHostAlias = "simple-login-self-host-alias";
+    public const string EnablePMFlightRecorder = "enable-pm-flight-recorder";
+    public const string MobileErrorReporting = "mobile-error-reporting";
 
     /* Platform Team */
     public const string PersistPopupView = "persist-popup-view";