[IMP] web_remember_tree_column_width: adjust SCSS selector

Previously, the custom SCSS of this module was only applied to columns that had the class o_column_sortable. This meant that columns such as HTML were not sortable and did not benefit from the custom SCSS.

This pull request has made changes to the SCSS selector to ensure that all table columns in the list view are selected. However, it excludes the record selector (the first checkbox column) and column optional (the last column) which have the class o_list_controller.

web_remember_tree_column_width/static/src/scss/main.scss

@@ -1,4 +1,4 @@
-th.o_column_sortable {
+div.o_list_renderer > table.o_list_table th:not(.o_list_controller) {
     max-width: none !important;
     min-width: 0 !important;
 }