Minor improvements to Managed SNI tracing

[cheenamalhotra]

This PR improves tracing in Managed SNI to capture continuation events, errors, etc. This is helpful for investigating delays, timeouts in a heavy-loaded application.

Also fixed the SNIPacket constructor to initialize with physical handle reference.

[Copilot]

Pull request overview

This PR enhances diagnostic tracing in Managed SNI by enabling trace events in release builds and fixing the SNIPacket constructor initialization. The changes aim to improve observability in production environments by capturing continuation events, errors, and connection-related information during heavy-load scenarios.

• Added trace event in ReadAsyncCallback to track when the callback is entered
• Modified SNIPacket constructor calls in non-DEBUG builds to include physical handle reference
• Removed DEBUG conditional compilation from several trace events to enable production tracing

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
TdsParserStateObject.cs	Added trace event to log entry into ReadAsyncCallback for improved diagnostics
SniPhysicalHandle.netcore.cs	Changed SNIPacket constructor call in non-DEBUG builds to pass physical handle and id parameters
SniPacket.netcore.cs	Removed DEBUG guards from trace events to enable tracing in release builds