fix(googlecalendar): suppress notifications on hangout-link follow-up patch - #30049

What does this PR do?

Fixes #30044

Part of the bug report in #30044: when a booking is created with Google
Calendar + Google Meet, events.insert is called with sendUpdates: "none"
so that Cal.diy manages its own confirmation emails and Google does not send a
notification. A follow-up events.patch then writes the Meet/hangout link into
the event description, but it omits sendUpdates entirely. Google therefore
notifies the attendee about the change with an "Updated invitation" email even
though no original invitation was ever sent to them - the attendee's only
interaction with the event is a phantom update email.

This change makes the follow-up patch consistent with the insert by passing
sendUpdates: "none", so Google stops sending that misleading notification
(it also removes the accidental email channel that this issue reports being
lost on the failure path).

Note: this PR addresses the notification-inconsistency part of #30044 (the
reporter's option 3). The broader question of sending Cal.diy's confirmation
emails when a calendar integration fails (options 1 and 2) is a larger
behavior change and is left to a follow-up.

Visual Demo (For contributors especially)

N/A - this is a one-line API parameter change; behavior is covered by the unit
test assertion added in this PR.

Video Demo (if applicable):

N/A

Image Demo (if applicable):

N/A

Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected).
• I have updated the developer docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox. N/A
• I confirm automated tests are in place that prove my fix is effective or that my feature works.

How should this be tested?

• No environment variables are required.
• Unit test: packages/app-store/googlecalendar/lib/__tests__/CalendarService.test.ts - the createEvent > should patch event location with hangoutLink when event is created with hangoutLink test now asserts that the follow-up events.patch call includes sendUpdates: "none".
• Run: yarn vitest run packages/app-store/googlecalendar/lib/__tests__/CalendarService.test.ts
• Local check: all 20 tests in the file pass. The new assertion fails (patch omits sendUpdates) before the fix and passes after it.

Checklist

• My PR is small (<500 lines and <10 files; this PR is 2 files, +5 lines) and should NOT be split into smaller PRs

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