Replace ECM AppOps call with service

A new ECM service was introcuded in changeId
I831391e4437b51b3312b5273a2360bd029a3d8ee.

We begin calling it, and update/cleanup method signatures to match.

Note: There are two feature flags:

1. enhancedConfirmationModeApisEnabled - read only, protects the
   mainline API.

2. extendEcmToAllSettings - runtime - gates calls to the above APIs.

We use both so we can ramp up in teamfood as needed.

Bug: 297372999
Test: Tested on device
Test: atest SpaPrivilegedLibTests
Test: atest com.android.settings.applications.specialaccess.notificationaccess
Test: atest com.android.settings.datausage
Test: atest PremiumSmsAccessTest
Test: atest RestrictedPreferenceHelperTest
Change-Id: I945ec51df5cd63de548a8ffdd1acc4f09f2301e5

src/com/android/settings/widget/RestrictedAppPreference.java

@@ -21,6 +21,7 @@ import android.os.UserHandle;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 
+import androidx.annotation.NonNull;
 import androidx.preference.PreferenceManager;
 import androidx.preference.PreferenceViewHolder;
 
@@ -128,11 +129,11 @@ public class RestrictedAppPreference extends AppPreference {
     /**
      * Checks if the given setting is subject to Enhanced Confirmation Mode restrictions for this
      * package. Marks the preference as disabled if so.
-     * @param restriction The key identifying the setting
-     * @param packageName the package to check the restriction for
-     * @param uid the uid of the package
+     * @param settingIdentifier The key identifying the setting
+     * @param packageName the package to check the settingIdentifier for
      */
-    public void checkEcmRestrictionAndSetDisabled(String restriction, String packageName, int uid) {
-        mHelper.checkEcmRestrictionAndSetDisabled(restriction, packageName, uid);
+    public void checkEcmRestrictionAndSetDisabled(@NonNull String settingIdentifier,
+                                                  @NonNull String packageName) {
+        mHelper.checkEcmRestrictionAndSetDisabled(settingIdentifier, packageName);
     }
 }