Per-shard-pair transaction counters #2695

Job	Run time
MacOS CI (macos-latest, aarch64)	3m 53s
Test - ibft	12m 24s
MacOS CI (macos-13, x64)	8m 37s
Test - heavy	11m 16s
Test - nil	14m 23s
Test - nildocs	12m 57s
Test - niljs	13m 28s
Test - nilexplorer	11m 58s
Test - uniswap	10m 38s
Test - rollup-bridge-contracts	33s
Test - clijs	11m 20s
Test - walletextension	10m 44s
	2h 2m 11s

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