refactor: use sharded WAL #7511

Job	Run time
Format check	41s
Linter	3m 58s
Build	1m 38s
Unit tests (macos-latest)	2m 51s
Integration tests (macos-latest)	1m 39s
Integration tests (windows-latest)	3m 22s
Unit tests (windows-latest)	2m 41s
Unit tests (ubuntu-latest)	1m 30s
E2E tests (macos-latest)	9m 14s
E2E tests (ubuntu-latest)	8m 9s
E2E tests (windows-latest)	15m 37s
Integration tests (ubuntu-latest)	1m 51s
	53m 11s

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