Adopt optimized isolated path for SelectableEL #1245

Job	Run time
Vsock tests	2m 4s
Construct integration test matrix	3s
Cxx interop / Construct Cxx interop matrix	3s
Benchmarks / Construct Benchmarks matrix	3s
Unit tests / Construct unit test matrix	2s
Soundness / API breakage check	2m 1s
Soundness / Documentation check	2m 8s
Soundness / Unacceptable language check	3s
Soundness / Broken symlinks check	3s
Soundness / Format check	45s
Soundness / License headers check	10s
Soundness / Shell check	39s
Soundness / YAML lint check	5s
Soundness / Python lint check	6s
Benchmarks / Benchmarks / Linux (5.9)	5m 18s
Benchmarks / Benchmarks / Linux (5.10)	5m 0s
Benchmarks / Benchmarks / Linux (6.0)	5m 39s
Benchmarks / Benchmarks / Linux (nightly-6.0)	6m 18s
Benchmarks / Benchmarks / Linux (nightly-main)	4m 20s
Integration tests / Linux (5.9)	22m 53s
Integration tests / Linux (5.10)	21m 28s
Integration tests / Linux (6.0)	23m 34s
Integration tests / Linux (nightly-6.0)	23m 51s
Integration tests / Linux (nightly-main)	23m 26s
Unit tests / Unit tests / Linux (5.9)	3m 58s
Unit tests / Unit tests / Linux (5.10)	3m 47s
Unit tests / Unit tests / Linux (6.0)	4m 11s
Unit tests / Unit tests / Linux (nightly-6.0)	4m 40s
Cxx interop / Cxx interop / Linux (5.9)	1m 15s
Unit tests / Unit tests / Linux (nightly-main)	4m 21s
Cxx interop / Cxx interop / Linux (5.10)	1m 6s
Cxx interop / Cxx interop / Linux (6.0)	1m 21s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 34s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 30s
	2h 57m 45s

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