Fix #112630: Skip grave and acute quotations when selecting

Treat grave and acute accent characters as delimiters. Allows selection
of words in the same way as if surrounded by double and single
quotation marks.

Pull Request: https://projects.blender.org/blender/blender/pulls/112652

source/blender/blenlib/intern/string_cursor_utf8.c

@@ -70,6 +70,8 @@ static eStrCursorDelimType cursor_delim_type_unicode(const uint uch)
 
     case '\'':
     case '\"':
+    case '\`':
+    case 0xB4:        /* Acute accent. */
       return STRCUR_DELIM_QUOTE;
 
     case ' ':