When using the script editor, if the keywords #region and #endregion where
in a string and ate the start of the line, the editor would not ignore them
and count them as the actual keywords, which when folded, would only fold
until the first #endregion in a string, for example.
By checking if these keywords were in a string, this commit now ensures the
editor ignores strings and fold the section correctly.
Fixes#89115.
