[IMP] bus: throttle update bus presence method

Before this commit, the `updateBusPresence` method could have been
called many times in a row, resulting in many `update_presence` messages
being sent through the socket. This commit solves this issue by throttling
this method in order for it to only be called once in `UPDATE_BUS_PRESENCE_DELAY`
seconds.

closes odoo/odoo#102251

Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

addons/bus/static/src/im_status_service.js

@@ -17,23 +17,26 @@ export const imStatusService = {
     start(env, { bus_service, multi_tab, presence }) {
         const imStatusModelToIds = {};
         let updateBusPresenceTimeout;
+        const throttledUpdateBusPresence = _.throttle(
+            function updateBusPresence() {
+                clearTimeout(updateBusPresenceTimeout);
+                if (!multi_tab.isOnMainTab()) {
+                    return;
+                }
+                const now = new Date().getTime();
+                bus_service.send("update_presence", {
+                    inactivity_period: now - presence.getLastPresence(),
+                    im_status_ids_by_model: { ...imStatusModelToIds },
+                });
+                updateBusPresenceTimeout = browser.setTimeout(throttledUpdateBusPresence, UPDATE_BUS_PRESENCE_DELAY);
+            },
+            UPDATE_BUS_PRESENCE_DELAY
+        );
 
-        function updateBusPresence() {
-            clearTimeout(updateBusPresenceTimeout);
-            if (!multi_tab.isOnMainTab()) {
-                return;
-            }
-            const now = new Date().getTime();
-            bus_service.send("update_presence", {
-                inactivity_period: now - presence.getLastPresence(),
-                im_status_ids_by_model: { ...imStatusModelToIds },
-            });
-            updateBusPresenceTimeout = browser.setTimeout(updateBusPresence, UPDATE_BUS_PRESENCE_DELAY);
-        }
         // wait for im_status model/ids to be registered before starting.
-        browser.setTimeout(updateBusPresence, 250);
-        multi_tab.bus.addEventListener('become_main_tab', updateBusPresence);
-        bus_service.addEventListener('reconnect', updateBusPresence);
+        browser.setTimeout(throttledUpdateBusPresence, 250);
+        multi_tab.bus.addEventListener('become_main_tab', throttledUpdateBusPresence);
+        bus_service.addEventListener('reconnect', throttledUpdateBusPresence);
         multi_tab.bus.addEventListener('no_longer_main_tab', () => clearTimeout(updateBusPresenceTimeout));
         bus_service.addEventListener('disconnect', () => clearTimeout(updateBusPresenceTimeout));