feat: handle reorgs in get_filter_changes with reorg watermark #482

Job	Run time
rust-library-base / Feature Checks	5m 15s
rust-library-base / Base Checks / doctest	5m 37s
rust-library-base / Base Checks / Docs	4m 4s
rust-library-base / Base Checks / Rustfmt	44s
rust-library-base / Base Checks / Clippy	3m 56s
rust-library-base / Base Checks / Test Suite	8m 49s
	28m 25s

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