Add Sendability annotations on SocketOptionProvider #1139

Job	Run time
Construct integration test matrix	3s
Vsock tests	2m 17s
Benchmarks / Construct Benchmarks matrix	3s
Cxx interop / Construct Cxx interop matrix	3s
Unit tests / Construct unit test matrix	6s
Soundness / Documentation check	2m 13s
Soundness / Broken symlinks check	2s
Soundness / API breakage check	2m 15s
Soundness / Format check	51s
Soundness / License headers check	8s
Soundness / Python lint check	6s
Soundness / Shell check	43s
Soundness / Unacceptable language check	3s
Soundness / YAML lint check	4s
Benchmarks / Benchmarks / Linux (5.9)	5m 17s
Benchmarks / Benchmarks / Linux (5.10)	5m 2s
Benchmarks / Benchmarks / Linux (6.0)	5m 47s
Benchmarks / Benchmarks / Linux (nightly-6.0)	6m 39s
Benchmarks / Benchmarks / Linux (nightly-main)	4m 52s
Integration tests / Linux (5.9)	6m 31s
Integration tests / Linux (5.10)	14m 12s
Integration tests / Linux (6.0)	7m 13s
Integration tests / Linux (nightly-6.0)	7m 43s
Integration tests / Linux (nightly-main)	7m 14s
Cxx interop / Cxx interop / Linux (5.9)	1m 14s
Cxx interop / Cxx interop / Linux (5.10)	1m 12s
Cxx interop / Cxx interop / Linux (6.0)	1m 22s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 36s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 38s
Unit tests / Unit tests / Linux (5.9)	3m 55s
Unit tests / Unit tests / Linux (5.10)	3m 42s
Unit tests / Unit tests / Linux (6.0)	4m 6s
Unit tests / Unit tests / Linux (nightly-6.0)	4m 30s
Unit tests / Unit tests / Linux (nightly-main)	4m 33s
	1h 47m 15s

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