Reorder ImsFeature initialization to handle STATE_READY

The method ImsFeature#setFeatureState can not be called
in the constructor of MmTelFeature currently, because the
IMS_SERVICE_UP intent will not be sent until mContext != null.

Remove this dependency and ensure addImsFeatureStatusCallback
is called after ImsFeature#initialize.

Bug: 130569556
Test: atest GtsTelephonyTestCases; atest FrameworksTelephonyTests
Merged-In: I562246c1995365308d26f44683f75bf5c46b7405
Change-Id: Ib3ca59eeeda89c0989cfd767257a6a598a97a670

telephony/java/android/telephony/ims/ImsService.java

@@ -40,8 +40,6 @@ import android.util.SparseArray;
 import com.android.ims.internal.IImsFeatureStatusCallback;
 import com.android.internal.annotations.VisibleForTesting;
 
-import static android.Manifest.permission.MODIFY_PHONE_STATE;
-
 /**
  * Main ImsService implementation, which binds via the Telephony ImsResolver. Services that extend
  * ImsService must register the service in their AndroidManifest to be detected by the framework.
@@ -229,8 +227,8 @@ public class ImsService extends Service {
 
     private void setupFeature(ImsFeature f, int slotId, int featureType,
             IImsFeatureStatusCallback c) {
-        f.addImsFeatureStatusCallback(c);
         f.initialize(this, slotId);
+        f.addImsFeatureStatusCallback(c);
         addImsFeature(slotId, featureType, f);
     }