[REF] mail, im_livechat: move /mail/chat_history to im_livechat

It is only used there.

In preparation of splitting discuss and mail modules.

Part of task-3265211

closes odoo/odoo#119302

Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

addons/im_livechat/controllers/main.py

@@ -211,3 +211,11 @@ class LivechatController(http.Controller):
         discuss_channel = request.env['discuss.channel'].sudo().search([('uuid', '=', uuid)])
         if discuss_channel:
             discuss_channel._close_livechat_session()
+
+    @http.route(['/im_livechat/chat_history'], type="json", auth="public", cors="*")
+    def im_livechat_chat_history(self, uuid, last_id=False, limit=20):
+        channel = request.env["discuss.channel"].sudo().search([('uuid', '=', uuid)], limit=1)
+        if not channel:
+            return []
+        else:
+            return channel._channel_fetch_message(last_id, limit)

addons/im_livechat/static/src/legacy/public_models/public_livechat_global.js

@@ -52,7 +52,7 @@ Model({
             const cookie = JSON.parse(strCookie || "{}");
             if (cookie.id) {
                 const history = await this.messaging.rpc({
-                    route: "/mail/chat_history",
+                    route: "/im_livechat/chat_history",
                     params: { uuid: cookie.uuid, limit: 100 },
                 });
                 history.reverse();

addons/mail/controllers/bus.py

@@ -35,11 +35,3 @@ class MailChatController(BusController):
             subtype_xmlid='mail.mt_comment'
         )
         return message.id if message else False
-
-    @route(['/mail/chat_history'], type="json", auth="public", cors="*")
-    def mail_chat_history(self, uuid, last_id=False, limit=20):
-        channel = request.env["discuss.channel"].sudo().search([('uuid', '=', uuid)], limit=1)
-        if not channel:
-            return []
-        else:
-            return channel._channel_fetch_message(last_id, limit)