Add TestApi annotations to LocationManager

Expose some APIs for CTS tests.

Bug: 123766886
Test: N/A
Change-Id: I4fe7d05cf13c3cff793803297698452c1bfc247e

location/java/android/location/LocationManager.java

@@ -934,6 +934,7 @@ public class LocationManager {
      * @hide
      */
     @SystemApi
+    @TestApi
     @RequiresPermission(anyOf = {ACCESS_COARSE_LOCATION, ACCESS_FINE_LOCATION})
     public void requestLocationUpdates(LocationRequest request, LocationListener listener,
             Looper looper) {
@@ -963,6 +964,7 @@ public class LocationManager {
      * @hide
      */
     @SystemApi
+    @TestApi
     @RequiresPermission(anyOf = {ACCESS_COARSE_LOCATION, ACCESS_FINE_LOCATION})
     public void requestLocationUpdates(LocationRequest request, PendingIntent intent) {
         checkPendingIntent(intent);
@@ -1293,6 +1295,7 @@ public class LocationManager {
      * @hide
      */
     @SystemApi
+    @TestApi
     @RequiresPermission(WRITE_SECURE_SETTINGS)
     public void setLocationEnabledForUser(boolean enabled, UserHandle userHandle) {
         Settings.Secure.putIntForUser(