Add function for input preprocessing in numerical comparator #3691

Job	Run time
linux (linux, linux.2xlarge, executorch-ubuntu-22.04-clang12) / build	6m 28s
linux (linux, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11-aarch64) / build	5m 58s
apple (pybind) / build	6m 39s
apple (llm) / build	6m 18s
apple (ios-simulator) / build	7m 32s
linux (pybind, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11-aarch64) / build	5m 47s
apple (macos) / build	7m 43s
apple (ios) / build	7m 11s
linux (pybind, linux.2xlarge, executorch-ubuntu-22.04-clang12) / build	6m 27s
linux (llm, linux.2xlarge, executorch-ubuntu-22.04-clang12) / build	6m 21s
linux (llm, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11-aarch64) / build	5m 38s
windows (pybind) / build	6m 16s
	1h 18m 18s

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