feat(resharding): flat storage resharding children catchup #7634

Job	Run time
Backward Compatibility	7m 59s
Protobuf Backward Compatibility	11s
Cargo Nextest (Linux)	7m 59s
Cargo Nextest (Linux Nightly)	6m 41s
Database Migration	6m 42s
Cargo Nextest (MacOS)	7m 58s
Sanity Checks	6m 32s
Cargo Audit	24s
Cargo Deny	36s
Cargo Clippy	6m 41s
Cargo Fmt	23s
Non-default Configuration Builds	1m 20s
Themis	41s
Unused Dependencies	6m 40s
Rust Doctests	6m 40s
Protocol Schema	7m 56s
Genesis Changes	6m 34s
Style	48s
Upgradability	6m 34s
Windows check for building public libraries	4m 38s
Generate Coverage Artifact	1s
Upload Coverage	1s
	1h 33m 59s

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