Mm 16623 fix all initialism errors in channels/app and channels/api4 dir (#25743)

* updated go mod and sum files

* fixed var-naming errors in channels/app and channels/api4 dir

* Revert "updated go mod and sum files"

This reverts commit 088dd00a848c2c31952c29f0a2a28a9fb47fc3f7.

* renamed a cost .

server/cmd/mmctl/commands/command_e2e_test.go

@@ -195,7 +195,7 @@ func (s *MmctlE2ETestSuite) TestArchiveCommandCmdF() {
 			TeamId:      teamOfBasicUser.Id,
 			DisplayName: "command",
 			Description: "command",
-			Trigger:     api4.GenerateTestId(),
+			Trigger:     api4.GenerateTestID(),
 			URL:         "http://localhost:8000/example",
 			CreatorId:   s.th.BasicUser.Id,
 			Username:    s.th.BasicUser.Username,
@@ -231,7 +231,7 @@ func (s *MmctlE2ETestSuite) TestArchiveCommandCmdF() {
 			TeamId:      teamOfAdminUser.Id,
 			DisplayName: "command",
 			Description: "command",
-			Trigger:     api4.GenerateTestId(),
+			Trigger:     api4.GenerateTestID(),
 			URL:         "http://localhost:8000/example",
 			CreatorId:   s.th.SystemAdminUser.Id,
 			Username:    s.th.SystemAdminUser.Username,