Tests that Emulation.setTimezoneOverride works when sent to a dedicated worker target.

Set timezone to Asia/Shanghai in dedicated worker
Detected main page timezone: Asia/Shanghai
Detected dedicated worker timezone: Asia/Shanghai

Tried to set override from main page
Timezone override is already in effect

Overwrite timezone with Europe/Paris in dedicated worker
Detected main page timezone: Europe/Paris
Detected dedicated worker timezone: Europe/Paris

Reset timezone to default in dedicated worker
Timezone correctly reset to initial value: true

Set timezone to Europe/Moscow in main page after dedicated worker reset
Detected main page timezone: Europe/Moscow
Detected dedicated worker timezone: Europe/Moscow