[FIX] bus: SharedWorker is buggy on iOS 16.1

Since the iOS 16.1 update, the WKWebView used in the iOS mobile app
crashes when trying to instanciate a `SharedWorker`... even if this
feature was newly added in iOS 16.0.

Safari iOS doesn't seem to be impacted.

This commit works around this issue by disabling the usage of the
`SharedWorker` in the iOS mobile app, using instead the existing
fallback to a regular `Worker`.

Steps to reproduce:
- On a device running iOS 16.1
- Open Odoo in the iOS mobile app
=> Once connected the app freezes with a gray screen

opw-3045539

closes odoo/odoo#104295

Signed-off-by: Adrien Dieudonné (adr) <adr@odoo.com>