fix(apis): user details apis should return email in response (#87049)

Fixes GH-77000

Author: sentaur-athena

src/sentry/users/api/endpoints/user_details.py

@@ -209,9 +209,14 @@ def put(self, request: Request, user: User) -> Response:
         :param string default_issue_event: Event displayed by default, "recommended", "latest" or "oldest"
         :auth: required
         """
-        if "username" in request.data:
+        email = None
+        if "email" in request.data and len(request.data["email"]) > 0:
+            email = request.data["email"]
+        elif "username" in request.data and len(request.data["username"]) > 0:
+            email = request.data["username"]
+        if email:
             verified_email_found = UserEmail.objects.filter(
-                user_id=user.id, email=request.data["username"], is_verified=True
+                user_id=user.id, email=email, is_verified=True
             ).exists()
             if not verified_email_found:
                 return Response({"detail": "Verified email address is not found."}, status=400)

tests/sentry/users/api/endpoints/test_user_details.py

@@ -184,11 +184,11 @@ def test_change_username_when_different(self):
         self.login_as(user=user, superuser=False)
 
         self.create_useremail(user, "[email protected]", is_verified=True)
-        self.get_success_response("me", username="[email protected]")
-
+        response = self.get_success_response("me", username="[email protected]")
         user = User.objects.get(id=user.id)
 
         assert user.email == "[email protected]"
+        assert response.data["email"] == "[email protected]"
         assert user.username == "[email protected]"
 
     def test_change_username_when_same(self):