fix: pad function hashes to always be 8 characters #1741
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Why it's needed
Currenty, when specifying a transaction sequence containing a function hash with leading zeros, eg:
--transaction-sequence '[[0x0651cb35]]'these leading zeros are dropped because of conversion to and from strings etc.. This causes the call to bytes.fromhex to fail and causes Mythril to crash.What I did
Add leading zeros to function hashes so that a function hash is always 8 characters. This allows function hashes with leading zeros to be used.