Debug info: force dark support

app/src/main/java/eu/faircode/email/Log.java

@@ -79,6 +79,7 @@ import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.FragmentManager;
 import androidx.preference.PreferenceManager;
+import androidx.webkit.WebViewFeature;
 
 import com.bugsnag.android.BreadcrumbType;
 import com.bugsnag.android.Bugsnag;
@@ -1993,6 +1994,9 @@ public class Log {
         sb.append(String.format("UI type: %s %s\r\n", uiType,
                 "normal".equals(uiType) ? "" : "!!!"));
 
+        sb.append(String.format("Force dark support: %b\r\n",
+                WebViewEx.isFeatureSupported(WebViewFeature.FORCE_DARK)));
+
         sb.append("\r\n");
 
         Boolean ignoring = Helper.isIgnoringOptimizations(context);