Add option to disable ambiguous unicode characters detection (#28454)

* Close #24483
* Close #28123
* Close #23682
* Close #23149

(maybe more)

custom/conf/app.example.ini

@@ -1212,6 +1212,9 @@ LEVEL = Info
 ;; Max size of files to be displayed (default is 8MiB)
 ;MAX_DISPLAY_FILE_SIZE = 8388608
 ;;
+;; Detect ambiguous unicode characters in file contents and show warnings on the UI
+;AMBIGUOUS_UNICODE_DETECTION = true
+;;
 ;; Whether the email of the user should be shown in the Explore Users page
 ;SHOW_USER_EMAIL = true
 ;;