[FIX] website_event_track: crash in SWs fetch listener on Safari 17.0+

[gbaumgartner-callino]

This is a cherry pick of odoo@7a5cabe

Description of the issue/feature this PR addresses:
This PR addresses an issue opening events on Safari Browser 17.0+
Opening another event after having looked at another one leads to a Browser Crash

Current behavior before PR:
Before this commit, when browsing the "Events" part of website on Safari
(both macOS and iOS/ipadOS), the page could be loaded only once and
returns a "FetchEvent.respondWith received an error: NotSupportedError:
The operation is not supported." error message on afterward, completely
blocking access to everything under the /event path.

This error is actually thrown from the ServiceWorker's fetch event's
listener, and more specifically, from the storage availablity check.

Since Safari 17.0, the Storage API - and in this case its estimate()
function - has been enabled in WebKit's builds for Apple platforms (see
WebKit PR [1]). But even if this feature should be available in Web
Workers (cf. MDN [2] and the spec [3]), it returns a NotSupportedError
error when called from the ServiceWorker on Safari 17.0+ (but works fine
in the global scope).

Desired behavior after PR is merged:
Any event can be opened on Safari Browser without Crashing the page

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