feat!: Flexible checksum v2 #1202

Job	Run time
linux (jammy, 5.9)	11m 22s
apple (macos-13, Xcode_15.2, platform=iOS Simulator,OS=17.2,name=iPhone 15)	18m 25s
linux (jammy, 6.0)	11m 25s
linux (amazonlinux2, 5.9)	11m 35s
apple (macos-13, Xcode_15.2, platform=tvOS Simulator,OS=17.2,name=Apple TV 4K (3rd generation) (a...	13m 55s
apple (macos-13, Xcode_15.2, platform=visionOS Simulator,OS=1.0,name=Apple Vision Pro)	13m 53s
linux (amazonlinux2, 6.0)	12m 5s
apple (macos-13, Xcode_15.2, platform=macOS)	17m 52s
apple (macos-15, Xcode_16, platform=iOS Simulator,OS=18.0,name=iPhone 16)	9m 54s
apple (macos-15, Xcode_16, platform=tvOS Simulator,OS=18.0,name=Apple TV 4K (3rd generation) (at ...	8m 34s
apple (macos-15, Xcode_16, platform=visionOS Simulator,OS=2.0,name=Apple Vision Pro)	9m 11s
apple (macos-15, Xcode_16, platform=macOS)	8m 36s
	2h 26m 47s

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