[MM-62179] Fix: mmctl debug error when setting email (#29953)

* only GetUserByEmail if arg is an email

* fixing tests

* fix typo

server/cmd/mmctl/commands/token_test.go

@@ -24,12 +24,6 @@ func (s *MmctlUnitTestSuite) TestGenerateTokenForAUserCmd() {
 		mockUser := model.User{Id: "userId1", Email: "user1@example.com", Username: "user1"}
 		mockToken := model.UserAccessToken{Token: "token-id", Description: "token-desc"}
 
-		s.client.
-			EXPECT().
-			GetUserByEmail(context.TODO(), userArg, "").
-			Return(nil, &model.Response{}, errors.New("no user found with the given email")).
-			Times(1)
-
 		s.client.
 			EXPECT().
 			GetUserByUsername(context.TODO(), userArg, "").
@@ -58,12 +52,6 @@ func (s *MmctlUnitTestSuite) TestGenerateTokenForAUserCmd() {
 		printer.Clean()
 
 		userArg := "some-text"
-		s.client.
-			EXPECT().
-			GetUserByEmail(context.TODO(), userArg, "").
-			Return(nil, &model.Response{}, errors.New("no user found with the given email")).
-			Times(1)
-
 		s.client.
 			EXPECT().
 			GetUserByUsername(context.TODO(), userArg, "").
@@ -87,12 +75,6 @@ func (s *MmctlUnitTestSuite) TestGenerateTokenForAUserCmd() {
 		userArg := "user1"
 		mockUser := model.User{Id: "userId1", Email: "user1@example.com", Username: "user1"}
 
-		s.client.
-			EXPECT().
-			GetUserByEmail(context.TODO(), userArg, "").
-			Return(nil, &model.Response{}, errors.New("no user found with the given email")).
-			Times(1)
-
 		s.client.
 			EXPECT().
 			GetUserByUsername(context.TODO(), userArg, "").
@@ -126,12 +108,6 @@ func (s *MmctlUnitTestSuite) TestListTokensOfAUserCmdF() {
 		mockToken1 := model.UserAccessToken{IsActive: true, Id: "token-1-id", Description: "token-1-desc"}
 		mockToken2 := model.UserAccessToken{IsActive: false, Id: "token-2-id", Description: "token-2-desc"}
 
-		s.client.
-			EXPECT().
-			GetUserByEmail(context.TODO(), mockUser.Id, "").
-			Return(nil, &model.Response{}, errors.New("no user found with the given email")).
-			Times(1)
-
 		s.client.
 			EXPECT().
 			GetUserByUsername(context.TODO(), mockUser.Id, "").
@@ -204,12 +180,6 @@ func (s *MmctlUnitTestSuite) TestListTokensOfAUserCmdF() {
 		command.Flags().Bool("active", false, "")
 		command.Flags().Bool("inactive", false, "")
 
-		s.client.
-			EXPECT().
-			GetUserByEmail(context.TODO(), userArg, "").
-			Return(nil, &model.Response{}, errors.New("no user found with the given email")).
-			Times(1)
-
 		s.client.
 			EXPECT().
 			GetUserByUsername(context.TODO(), userArg, "").