refactor: use sharded WAL #7537

Job	Run time
Build	1m 40s
Format check	45s
Linter	1m 49s
Integration tests (windows-latest)	3m 31s
Unit tests (macos-latest)	1m 36s
Unit tests (ubuntu-latest)	1m 29s
E2E tests (ubuntu-latest)	8m 14s
E2E tests (macos-latest)	15m 23s
E2E tests (windows-latest)	14m 39s
Unit tests (windows-latest)	2m 45s
Integration tests (macos-latest)	2m 21s
Integration tests (ubuntu-latest)	1m 53s
	56m 5s

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