refactor: use sharded WAL #7528

Job	Run time
Format check	46s
Build	1m 38s
Linter	4m 2s
Integration tests (windows-latest)	3m 14s
Integration tests (ubuntu-latest)	1m 52s
Unit tests (windows-latest)	2m 43s
E2E tests (macos-latest)	13m 24s
E2E tests (ubuntu-latest)	8m 28s
Integration tests (macos-latest)	1m 34s
Unit tests (ubuntu-latest)	1m 26s
Unit tests (macos-latest)	1m 27s
E2E tests (windows-latest)	16m 21s
	56m 55s

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