blockifier: add validation for contract class manager config#12696

ArniStarkware wants to merge 1 commit intomain-v0.14.2starkware-libs/sequencer:main-v0.14.2from

arni/blockifier/native_class_manager/validate_configstarkware-libs/sequencer:arni/blockifier/native_class_manager/validate_configCopy head branch name to clipboard