[FIX] web: Select subfields without removing filter text on export

What are the steps to reproduce your issue ?

    1. Install "contacts"
    2. Select list view and select one or more contacts
    3. Select "Export" actions

What is currently happening ?

    When filtering fields with text, the system only displays the corresponding
    fields, but when clicking on sub-field the text written just before
    is deleted, which prevents us to return to all fields without filter

What are you expecting to happen ?

    Filter fields and select sub-field without deleting the filter text

opw-2411928

closes odoo/odoo#63339

X-original-commit: d947ea609b458ddbccabd661c22652d6c86a8167
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>
Signed-off-by: Achraf <abz-odoo@users.noreply.github.com>

addons/web/static/src/js/widgets/data_export.js

@@ -265,7 +265,6 @@ var DataExport = Dialog.extend({
             var $el = $(el);
             $el.find('.o_tree_column').first().toggleClass('o_required', !!self.records[$el.data('id')].required);
         });
-        this.$('#o-export-search-filter').val('');
     },
     /**
      * @private
@@ -319,7 +318,6 @@ var DataExport = Dialog.extend({
                 $child.show();
             }
         }
-        this.$('#o-export-search-filter').val('');
     },
     /**
      * Fetches the saved export list for the current model