[CIVIS-9813] fix for test sdk integration

[ypopovych]

What and why?

Swift testing library is using MachPorts to communicate with this library. They are unique for OS kernel, so each process should have a unique name for them. Right now we are using hardcoded names, so two running test processes will fail.

How?

Testing library sets CI_VISIBILITY_MESSAGE_CHANNEL_UUID variable which is used for name generation for MachPorts.

Review checklist

• [x] Feature or bugfix MUST have appropriate tests (unit, integration)
• [x] Make sure each commit and the PR mention the Issue number or JIRA reference
• [x] Add CHANGELOG entry for user facing changes

Custom CI job configuration (optional)

• [ ] Run unit tests for Core, RUM, Trace, Logs, CR and WVT
• [ ] Run unit tests for Session Replay
• [ ] Run integration tests
• [ ] Run smoke tests
• [ ] Run tests for tools/