For #19564: Explicitly update switch state for a11y event announcements. (#19589)

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

@@ -32,6 +32,13 @@ class SyncPreference @JvmOverloads constructor(
         widgetLayoutResource = R.layout.preference_sync
     }
 
+    /**
+     * Updates the switch state.
+     * */
+    internal fun setSwitchCheckedState(isChecked: Boolean) {
+        switchView?.isChecked = isChecked
+    }
+
     override fun onBindViewHolder(holder: PreferenceViewHolder) {
         super.onBindViewHolder(holder)
 

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

@@ -83,6 +83,7 @@ class SyncPreferenceView(
 
             setOnPreferenceChangeListener { _, newValue ->
                 SyncEnginesStorage(context).setStatus(syncEngine, newValue as Boolean)
+                setSwitchCheckedState(newValue)
                 true
             }
         }

app/src/test/java/org/mozilla/fenix/settings/logins/SyncPreferenceViewTest.kt

@@ -137,6 +137,7 @@ class SyncPreferenceViewTest {
             SyncEngine.Passwords to true
         )
         every { anyConstructed<SyncEnginesStorage>().setStatus(any(), any()) } just Runs
+        every { syncPreference.setSwitchCheckedState(any()) } just Runs
 
         createView()
 
@@ -155,6 +156,7 @@ class SyncPreferenceViewTest {
             SyncEngine.Passwords to false
         )
         every { anyConstructed<SyncEnginesStorage>().setStatus(any(), any()) } just Runs
+        every { syncPreference.setSwitchCheckedState(any()) } just Runs
 
         createView()