[FIX] livechat : do not close livechat after feedback-rating, positive or negative

Since there is now a possibility for the user to ask a copy of the conversation,
livechat window should not be closed after feedback, to let the user choose to
receive a copy.

The behaviour was no aligned between positive and neutral/negative feedback.
Before, when sending a positive rating, the rating was not sent as a message on the channel
and the window didn't close.
But for neutral/negative feedback, the window was sending the rating as a message on the channel
but the chatter closed immediately.

Now, the rating is sent as a message for any type of rating.
If this is a neutral / negative rating, the reason field appears.
After sending the reason, the window stays opened.

Task ID: 2076656
PR #37511

addons/im_livechat/static/src/js/im_livechat.js

@@ -449,23 +449,20 @@ var Feedback = Widget.extend({
      * @private
      * @param {Object} options
      */
-    _sendFeedback: function (options) {
+    _sendFeedback: function (reason) {
         var self = this;
         var args = {
             uuid: this._livechat.getUUID(),
             rate: this.rating,
-            reason : options.reason
+            reason: reason,
         };
         this.dp.add(session.rpc('/im_livechat/feedback', args)).then(function () {
-            if (options.close) {
-                var emoji = RATING_TO_EMOJI[self.rating] || "??" ;
-                var content = _.str.sprintf(_t("Rating: %s"), emoji);
-                if (options.reason) {
-                    content += " \n" + options.reason;
-                }
-                self.trigger('send_message', { content: content });
-                self.trigger('feedback_sent'); // will close the chat
+            var emoji = RATING_TO_EMOJI[self.rating] || "??" ;
+            var content = _.str.sprintf(_t("Rating: %s"), emoji);
+            if (reason) {
+                content += " \n" + reason;
             }
+            self.trigger('send_message', { content: content });
         });
     },
     /**
@@ -492,9 +489,10 @@ var Feedback = Widget.extend({
      * @private
      */
     _onClickSend: function () {
+        this.$('.o_livechat_rating_reason').hide();
         this._showThanksMessage();
         if (_.isNumber(this.rating)) {
-            this._sendFeedback({ reason: this.$('textarea').val(), close: true });
+            this._sendFeedback(this.$('textarea').val());
         }
     },
     /**
@@ -512,8 +510,8 @@ var Feedback = Widget.extend({
         } else {
             this.$('.o_livechat_rating_reason').hide();
             this._showThanksMessage();
+            this._sendFeedback();
         }
-        this._sendFeedback({ close: false });
     },
     /**
     * @private