For #7075 Update passwords preference visibility and string

Set visibility for feature flags before settings screen it's displayed.
Change string for preference to match existing header string.
Update UI Tests

app/src/androidTest/java/org/mozilla/fenix/ui/robots/SettingsRobot.kt

@@ -156,8 +156,8 @@ private fun assertEnhancedTrackingProtectionValue() = onView(ViewMatchers.withTe
     .check(matches(withEffectiveVisibility(Visibility.VISIBLE)))
 
 private fun assertLoginsButton() {
-    TestHelper.scrollToElementByText("Passwords")
-    onView(ViewMatchers.withText("Passwords"))
+    TestHelper.scrollToElementByText("Logins and passwords")
+    onView(ViewMatchers.withText("Logins and passwords"))
         .check(matches(withEffectiveVisibility(Visibility.VISIBLE)))
 }
 

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

@@ -109,6 +109,7 @@ class SettingsFragment : PreferenceFragmentCompat(), AccountObserver {
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.preferences, rootKey)
+        updatePreferenceVisibilityForFeatureFlags()
     }
 
     override fun onResume() {
@@ -167,8 +168,6 @@ class SettingsFragment : PreferenceFragmentCompat(), AccountObserver {
             context!!,
             requireComponents.backgroundServices.accountManager.accountProfile()
         )
-
-        updatePreferenceVisibilityForFeatureFlags()
     }
 
     private fun updatePreferenceVisibilityForFeatureFlags() {

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

@@ -67,7 +67,7 @@
             app:isPreferenceVisible="false"
             android:icon="@drawable/ic_login"
             android:key="@string/pref_key_passwords"
-            android:title="@string/preferences_passwords" />
+            android:title="@string/preferences_passwords_logins_and_passwords" />
         <androidx.preference.Preference
             android:icon="@drawable/ic_private_browsing"
             android:key="@string/pref_key_add_private_browsing_shortcut"