refactor: use sharded WAL #7515

Job	Run time
Build	1m 37s
Linter	4m 2s
Unit tests (windows-latest)	2m 36s
E2E tests (windows-latest)	16m 37s
Format check	46s
Unit tests (macos-latest)	1m 51s
Integration tests (ubuntu-latest)	1m 54s
Integration tests (macos-latest)	2m 6s
E2E tests (ubuntu-latest)	8m 17s
Integration tests (windows-latest)	3m 39s
Unit tests (ubuntu-latest)	1m 29s
E2E tests (macos-latest)	7m 53s
	52m 47s

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