[FIX] account: reconciliation double click on proposition

Open the reconciliation widget, with a statement line that has
some move lines to reconcile with

Put your browser in Fast 3G to slow down stuff
then click multiple times on a move line to add it to
the reconciliation chain of the statement line

Before this commit, as many lines appeared in the reconciliation
chain as many clicks were made

After this commit, one can only click once on the lines

linked to #35194

OPW 2042751

closes odoo/odoo#35417

Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>

addons/account/static/src/js/reconciliation/reconciliation_renderer.js

@@ -695,7 +695,8 @@ var LineRenderer = Widget.extend(FieldManagerMixin, {
      * @param {MouseEvent} event
      */
     _onSelectMoveLine: function (event) {
-        var $el = $(event.target)
+        var $el = $(event.target);
+        $el.prop('disabled', true);
         this._destroyPopover($el);
         var moveLineId = $el.closest('.mv_line').data('line-id');
         this.trigger_up('add_proposition', {'data': moveLineId});