[CAL-1651] Possible issue with delete meetings in Video Apps like Zoom

[hariombalhara]

          The `credentialId` is set to the calendar's `credentialId` [here](https://github.com/calcom/cal.com/blob/main/packages/core/EventManager.ts#L141).

This does not cause errors in updateMeeting because the correct video credentials are obtained using getVideoCredentials.

However, the handleCancelBooking handler directly calls deleteMeeting in the videoClient and does not use getVideoCredentials to obtain the video integration credentials. Accordingly, no videoAdapter is found for deleteMeeting.

Originally posted by @aar2dee2 in #7651 (comment)

_CAL-1651

[hariombalhara]

@alannnc assigned this issue to you, let me know if someone else should take care of it.

[aar2dee2]

Happy to work on this. Please feel free to assign/share how you want to proceed.

[alannnc]

@aar2dee2 Assigned, please let me know if you still can work on this.
It looks like we should fetch credentials before calling deleteMeeting?

[aar2dee2]

thanks @alannnc

I'd made a fix in one of the commits in the Webex app PR
See the packages/features/bookings/lib/handleCancelBooking.ts file here

Would that approach be suitable?

[alannnc]

Solved here

#9281