Provide a default CopyStrategy overload for copyItem. #263

Job	Run time
Swift 6 Language Mode / Swift 6 language mode	1m 10s
Integration Tests / Linux (5.8)	13m 3s
Integration Tests / Linux (5.9)	14m 44s
Integration Tests / Linux (5.10)	14m 22s
Soundness / API breakage check	2m 31s
Soundness / Broken symlinks check	2s
Soundness / Documentation check	2m 7s
Integration Tests / Linux (nightly-6.0)	16m 57s
Integration Tests / Linux (nightly-main)	17m 39s
Soundness / Format check	52s
Soundness / License headers check	14s
Soundness / Shell check	7s
Soundness / Unacceptable language check	5s
Benchmarks / Benchmarks / Linux (5.8)	2m 43s
Cxx interop / Cxx interop / Linux (5.8)	1m 3s
Benchmarks / Benchmarks / Linux (5.9)	3m 57s
Cxx interop / Cxx interop / Linux (5.9)	1m 12s
Benchmarks / Benchmarks / Linux (5.10)	3m 40s
Cxx interop / Cxx interop / Linux (5.10)	1m 6s
Benchmarks / Benchmarks / Linux (nightly-6.0)	4m 41s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 41s
Benchmarks / Benchmarks / Linux (nightly-main)	5m 15s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 39s
Unit tests / Unit tests / Linux (5.8)	3m 25s
Unit tests / Unit tests / Linux (5.9)	3m 26s
Unit tests / Unit tests / Linux (5.10)	3m 27s
Unit tests / Unit tests / Linux (nightly-6.0)	4m 31s
Unit tests / Unit tests / Linux (nightly-main)	4m 20s
	2h 9m 59s

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