fix compat breaking: revive workaround padding in decode() (#867) #3123

Job	Run time
actionlint	16s
rust-lint	2m 46s
rust-unit-test	4m 43s
shellcheck	11s
validate-cargo-lock	24s
build-and-test-java-api (windows-latest)	5m 35s
build-and-test-java-api (macos-latest)	3m 6s
build-and-test-java-api (ubuntu-latest)	2m 49s
build-and-test-python-api (windows-latest)	5m 54s
build-and-test-python-api (macos-latest)	3m 36s
build-and-test-python-api (ubuntu-latest)	3m 1s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	1m 47s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	1m 34s
build-windows-cpp-example	5m 5s
c-header	46s
rust-integration-test-strategy-matrix	1s
rust-integration-test (macos-12)	2m 16s
rust-integration-test (ubuntu-20.04)	1m 33s
	45m 23s

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