Sanitize user in update user response (#24362)

server/channels/app/user_test.go

@@ -205,6 +205,7 @@ func TestUpdateUser(t *testing.T) {
 		require.Nil(t, err)
 		require.NotNil(t, u)
 		require.Less(t, u.LastPictureUpdate, iLastPictureUpdate)
+		require.Empty(t, u.Password)
 	})
 
 	t.Run("fails if profile picture is updated when user has custom profile picture and username is changed", func(t *testing.T) {
@@ -1731,11 +1732,12 @@ func TestPatchUser(t *testing.T) {
 	})
 
 	t.Run("Patch username with a new username", func(t *testing.T) {
-		_, err := th.App.PatchUser(th.Context, testUser.Id, &model.UserPatch{
+		u, err := th.App.PatchUser(th.Context, testUser.Id, &model.UserPatch{
 			Username: model.NewString(model.NewId()),
 		}, true)
 
 		require.Nil(t, err)
+		require.Empty(t, u.Password)
 	})
 }