feat: include phoneNumber from PhoneMultiFactorInfo

this is useful for indicating to users which phone number they have
enrolled, and distinguishing between factors if there are multiple
phone factors enrolled.

Author: mnahkies

packages/auth/android/src/main/java/io/invertase/firebase/auth/ReactNativeFirebaseAuthModule.java

@@ -2497,6 +2497,10 @@ private WritableMap multiFactorInfoToMap(MultiFactorInfo hint) {
     hintMap.putString("factorId", hint.getFactorId());
     hintMap.putString("uid", hint.getUid());
 
+    if (hint.getFactorId().equals(PhoneMultiFactorGenerator.FACTOR_ID)) {
+      hintMap.putString("phoneNumber", ((PhoneMultiFactorInfo) hint).getPhoneNumber());
+    }
+
     return hintMap;
   }
 

packages/auth/lib/index.d.ts

@@ -491,6 +491,11 @@ export namespace FirebaseAuthTypes {
     uid: string;
   }
 
+  export interface PhoneMultiFactorInfo extends MultiFactorInfo {
+      factorId: "phone";
+      phoneNumber: string;
+  }
+
   export interface MultiFactorAssertion {
     token: string;
     secret: string;