Add message to expected append-error for web to collect messages

[kopy]

Summary

Expected append errors (append-error events) were missing the messageCode entirely — 12,252 events had NULL messages. This aligns the web SDK with corbado-ios and corbado-android, which always include situation + error details for both expected and unexpected errors.

Cross-SDK comparison (before/after)

	Expected error (append-error)	Unexpected error (append-error-unexpected)
iOS (CorbadoClient.swift)	"situation: {rawValue} {message}"	"situation: {rawValue} {message}"
Android (CorbadoClient.kt)	"situation: {ordinal} message: {msg} cause: {cause}"	"situation: {ordinal} message: {msg} cause: {cause}"
Web (before)	NULL — no message passed	"situation: {code} type: {type} message: {msg} runtime: {ms}"
Web (after)	"situation: {code} type: {type} message: {msg} runtime: {ms}"	"situation: {code} type: {type} message: {msg} runtime: {ms}" (unchanged)

Changes

• AppendProcessProvider.tsx: Extract messageCode before the expected/unexpected branch in both handleErrorSoft and handleErrorHard, pass it to recordEventAppendError(messageCode).
• ConnectService.ts: Change recordEventAppendError() signature to accept messageCode?: string and forward it to #recordEvent.

[kopy]

Before: No message

After: With message

[kopy]

connectprocessevent table - append-error records from tracking DB (last 1h):

Before patch:

Timestamp	Process ID	Project	Event Type	Has Message	Message
16:55:37.203	3277197734372418502	20	append-error	NO	NULL
16:55:39.999	3277197734372418502	20	append-error	NO	NULL
16:55:47.046	3277197734372418502	20	append-error	NO	NULL
16:58:09.118	3277197734372418502	20	append-error	NO	NULL

After patch:

Timestamp	Process ID	Project	Event Type	Has Message	Message
16:58:12.976	3277197734372418502	20	append-error	YES	situation: 8 type: 2 message: The operation is not allowed at this time because the page does not have focus. runtime: 5
16:58:32.951	3277197734372418502	20	append-error	YES	situation: 8 type: 2 message: The operation either timed out or was not allowed. See: https://www.w3.org/TR/webauthn-2/#sctn-privacy-considerations-client. runtime: 1294