feat(14.2.1-03): add markdown and multilingual cabana fields

Lift locale maps before ProjectWritableFields so a Journal-shaped save can persist the default host scalar and non-default locales through TranslationWriter without dropping nested JSON.

Co-authored-by: Cursor <cursoragent@cursor.com>

modules/cabana/form_schema.go

@@ -26,6 +26,7 @@ var (
 		"switch": {}, "dropdown": {}, "relation": {}, "relation-manager": {},
 		"widget": {}, "partial": {}, "fileupload": {}, "datepicker": {},
 		"password": {}, "permissioneditor": {},
+		"markdown": {}, "mltext": {}, "mlmarkdown": {},
 	}
 	formSpans = map[string]struct{}{
 		"left": {}, "right": {}, "full": {}, "auto": {}, "row": {},