feat: handle reorgs in get_filter_changes with reorg watermark #442

Job	Run time
rust-library-base / Feature Checks	3m 31s
rust-library-base / Base Checks / Test Suite	6m 5s
rust-library-base / Base Checks / doctest	3m 29s
rust-library-base / Base Checks / Clippy	3m 50s
rust-library-base / Base Checks / Rustfmt	34s
rust-library-base / Base Checks / Docs	4m 18s
	21m 47s

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