Use request.CTX instead of *request.Context (#24877)

* Use request.CTX instead of *request.Context

* Fix tests

server/channels/app/plugin_api_test.go

@@ -71,7 +71,7 @@ func setDefaultPluginConfig(th *TestHelper, pluginID string) {
 	})
 }
 
-func setupMultiPluginAPITest(t *testing.T, pluginCodes []string, pluginManifests []string, pluginIDs []string, asMain bool, app *App, c *request.Context) string {
+func setupMultiPluginAPITest(t *testing.T, pluginCodes []string, pluginManifests []string, pluginIDs []string, asMain bool, app *App, c request.CTX) string {
 	pluginDir, err := os.MkdirTemp("", "")
 	require.NoError(t, err)
 	t.Cleanup(func() {
@@ -126,7 +126,7 @@ func setupMultiPluginAPITest(t *testing.T, pluginCodes []string, pluginManifests
 	return pluginDir
 }
 
-func setupPluginAPITest(t *testing.T, pluginCode string, pluginManifest string, pluginID string, app *App, c *request.Context) string {
+func setupPluginAPITest(t *testing.T, pluginCode string, pluginManifest string, pluginID string, app *App, c request.CTX) string {
 	asMain := pluginID != "test_db_driver"
 	return setupMultiPluginAPITest(t,
 		[]string{pluginCode}, []string{pluginManifest}, []string{pluginID},
@@ -915,7 +915,7 @@ func TestInstallPlugin(t *testing.T) {
 	// we need a modified version of setupPluginAPITest() because it wasn't possible to use it directly here
 	// since it removes plugin dirs right after it returns, does not update App configs with the plugin
 	// dirs and this behavior tends to break this test as a result.
-	setupTest := func(t *testing.T, pluginCode string, pluginManifest string, pluginID string, app *App, c *request.Context) (func(), string) {
+	setupTest := func(t *testing.T, pluginCode string, pluginManifest string, pluginID string, app *App, c request.CTX) (func(), string) {
 		pluginDir, err := os.MkdirTemp("", "")
 		require.NoError(t, err)
 		webappPluginDir, err := os.MkdirTemp("", "")
@@ -1834,7 +1834,7 @@ func (*MockSlashCommandProvider) GetCommand(a *App, T i18n.TranslateFunc) *model
 	}
 }
 
-func (mscp *MockSlashCommandProvider) DoCommand(a *App, c *request.Context, args *model.CommandArgs, message string) *model.CommandResponse {
+func (mscp *MockSlashCommandProvider) DoCommand(a *App, c request.CTX, args *model.CommandArgs, message string) *model.CommandResponse {
 	mscp.Args = args
 	mscp.Message = message
 	return &model.CommandResponse{