Add ACTION_EPHEMERAL_RESOLVER_SETTINGS

This Intent will be used in Settings to show the settings UI for the
Ephemeral resolver. Settings can get the correct component to send the
Intent to by calling
PackageManager.getInstantAppResolverSettingsComponent

Bug: 35918998
Test: Boots
Change-Id: I0edcf85704f2c19e0ee27f91b6ef057d52e32778
(cherry picked from commit aa49cb86e6d5f23d82c97db32c848bc4ea2b81bc)
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index fb86791..7890a96 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -1532,6 +1532,19 @@
             = "android.intent.action.RESOLVE_EPHEMERAL_PACKAGE";
 
     /**
+     * Activity Action: Launch ephemeral settings.
+     *
+     * <p class="note">
+     * This is a protected intent that can only be sent by the system.
+     * </p>
+     *
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
+    public static final String ACTION_EPHEMERAL_RESOLVER_SETTINGS
+            = "android.intent.action.EPHEMERAL_RESOLVER_SETTINGS";
+
+    /**
      * Used as a string extra field with {@link #ACTION_INSTALL_PACKAGE} to install a
      * package.  Specifies the installer package name; this package will receive the
      * {@link #ACTION_APP_ERROR} intent.