6f6da14cc8
On iOS Safari, a failed chunk load showed a snackbar containing the raw browser string `Importing a module script failed.` `PromiseRejectionEffect` snackbars the raw `error.message` of any unhandled rejection, so a floating dynamic import leaked browser internals to the user. It now skips the snackbar for stale chunk errors, which are still captured by Sentry. This only changes what the user sees, not the underlying fetch failure.