[MM-49989] Pass a context.Context to Client4 methods (#22922)

* Migrate all method in model/client4.go to accept a context.Context

* Fix th.*Client

* Fix remaining issues

* Empty commit to triger CI

* Fix test

* Add cancellation test

* Test that returned error is context.Canceled

* Fix bad merge

* Update mmctl code

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/cmd/mmctl/commands/saml_test.go

@@ -4,6 +4,8 @@
 package commands
 
 import (
+	"context"
+
 	"github.com/mattermost/mattermost-server/server/public/model"
 
 	"github.com/mattermost/mattermost-server/server/v8/cmd/mmctl/printer"
@@ -27,7 +29,7 @@ func (s *MmctlUnitTestSuite) TestSamlAuthDataReset() {
 
 		s.client.
 			EXPECT().
-			ResetSamlAuthDataToEmail(false, false, []string{}).
+			ResetSamlAuthDataToEmail(context.Background(), false, false, []string{}).
 			Return(int64(1), &model.Response{}, nil).
 			Times(1)
 
@@ -47,7 +49,7 @@ func (s *MmctlUnitTestSuite) TestSamlAuthDataReset() {
 
 		s.client.
 			EXPECT().
-			ResetSamlAuthDataToEmail(false, true, []string{}).
+			ResetSamlAuthDataToEmail(context.Background(), false, true, []string{}).
 			Return(int64(1), &model.Response{}, nil).
 			Times(1)
 
@@ -63,7 +65,7 @@ func (s *MmctlUnitTestSuite) TestSamlAuthDataReset() {
 		users := []string{"user1"}
 		s.client.
 			EXPECT().
-			ResetSamlAuthDataToEmail(false, false, users).
+			ResetSamlAuthDataToEmail(context.Background(), false, false, users).
 			Return(int64(1), &model.Response{}, nil).
 			Times(1)