CalendarEvent with id property fails

[benbucksch]

Issue Description

I'm seeing a difference between updating ContactCard and CalendarEvent.

When I do ContactCard/set with update: { u: { ..., id: "u" } }, it works, as expected.
When I do CalendarEvent/set with update: { u: { ..., id: "u" } }, it fails with "Failed to update on server - id: This property is immutable."

Note that the id value matches the actual ID, so I am not changing it. That's why I would expect the call to succeed in both cases.
In both cases, u is the ID that the server returned in the create result.

UPDATE: Same problem with isOrigin.

Expected Behavior

The call succeeds, for both data types.
The id is correct and has not changed, i.e. not "mutating".

Actual Behavior

The call succeeds for ContactCard
The call fails for CalendarEvent, with error "Failed to update on server - id: This property is immutable."

Reproduction Steps

No response

Relevant Log Output

No response

Stalwart Version

v0.15.x

Installation Method

Docker

Database Backend

RocksDB

Blob Storage

RocksDB

Search Engine

Internal

Directory Backend

Internal

Additional Context

No response

I acknowledge that:

• I have reviewed the documentation and FAQ and confirm that my issue is NOT addressed there.
• I have searched the Stalwart repository (both open and closed Discussions and Issues) and confirm this is not a duplicate.
• I have set the logging level to trace and included relevant log output if applicable.
• I agree to follow the project's Code of Conduct.

[mdecimus]

Added to #2835

[benbucksch]

Same problem with isOrigin

[mdecimus]

Fixed.