For issue #13827: "Set as default browser" option disappears from Settings.

app/src/main/java/org/mozilla/fenix/settings/SettingsFragment.kt

@@ -302,7 +302,8 @@ class SettingsFragment : PreferenceFragmentCompat() {
     private fun setupPreferences() {
         val leakKey = getPreferenceKey(R.string.pref_key_leakcanary)
         val debuggingKey = getPreferenceKey(R.string.pref_key_remote_debugging)
-        val preferenceExternalDownloadManager = requirePreference<Preference>(R.string.pref_key_make_default_browser)
+        val preferenceExternalDownloadManager =
+            requirePreference<Preference>(R.string.pref_key_external_download_manager)
         val preferenceLeakCanary = findPreference<Preference>(leakKey)
         val preferenceRemoteDebugging = findPreference<Preference>(debuggingKey)
         val preferenceMakeDefaultBrowser = requirePreference<Preference>(R.string.pref_key_make_default_browser)

app/src/main/res/xml/preferences.xml

@@ -136,7 +136,8 @@
             android:defaultValue="false"
             android:icon="@drawable/ic_download"
             android:key="@string/pref_key_external_download_manager"
-            android:title="@string/preferences_external_download_manager" />
+            android:title="@string/preferences_external_download_manager"
+            app:isPreferenceVisible="false"/>
 
         <androidx.preference.SwitchPreference
             android:defaultValue="true"