[16.0] web_remember_tree_column_width: issues with HTML fields

[AurelijaNorvaisaite]

Module

web_remember_tree_column_width

Describe the bug

When HTML field is in a list view, column width is not saved (when more columns in a list view are visible).

To Reproduce

Affected versions: 16.0

Steps to reproduce the behavior:

1. on runboat install module l10n_it_edi
2. Invoices list view -> select field edi_error_message as optional=show.
3. expand field column width, refresh page. Width is saved correctly.
4. Select more fields as optional=show. Column width is not saved.

Expected behavior
HTML field column width should stay the same.

[cuongnmtm]

Hello,
I have created a pull request to fix the issue at #2720. Could you please review and test the solution? Thanks.