@Mazaharul hi! Very cool, another user looking to get this working. Apologies did not see your respoonse.
Sadly there was no official fix or response from the n8n team.
The easy, but not preferred, solution was to store the auth / refresh tokens in a database, and force refresh before every request (or using cron daily). The refresh tokens last 7 days, but the auth token’s themselves only persist 24hr.