Before this PR, the bus service's `SharedWorker` sometimes failed to initialized with data url. This error only occurred on some devices, on chrome and in incognito mode. While the specifications specify that `SharedWorker` constructor should handle data url properly [1], there is no way to tell whether or not the user browser supports it. This commit solves this issue by introducing a fallback on simple `Worker`s since they seem to handle data url correctly in this case [2]. [1] https://html.spec.whatwg.org/multipage/workers.html#dom-worker [2] https://chromium.googlesource.com/chromium/src.git/+/9801daec162285a1f2c6695682ace5d508ea9b7f opw-3146671 closes odoo/odoo#112921 X-original-commit: 99ac9538d6ba49161be37318fca541c7e51603f9 Signed-off-by: Stockbauer Matthieu (tsm) <tsm@odoo.com>