feat: clean orphaned witnesses below the last final height #2126

Job	Run time
Backward Compatibility	11m 8s
Cargo Nextest (Linux)	18m 23s
Cargo Nextest (Linux StatelessNet)	24m 49s
Cargo Nextest (Linux Nightly)	24m 56s
Cargo Nextest (MacOS)	11m 11s
Lychee Lints	14s
Protobuf Backward Compatibility	9s
Database Migration	10m 17s
Cargo Fmt	16s
Genesis Changes	8m 59s
Sanity Checks	5m 49s
Upgradability	10m 25s
Style	34s
RPC Schema	10m 7s
Cargo Audit	19s
Cargo Deny	27s
Cargo Clippy	8m 4s
Non-default Configuration Builds	1m 12s
Themis	34s
Unused Dependencies	6m 40s
Generate Coverage Artifact (unit, unit)	3m 43s
Generate Coverage Artifact (integration, unit integration)	4m 29s
Upload Coverage	32s
	2h 43m 17s

Provide feedback