utils.ts: dont match parameters in constructor name check

[cfal]

when a function name is contained in any part of the constructor parameter name, it is incorrectly selected as the constructor, eg:

#[constructor]
fn constructor(first_owner: ContractAddress) {
...
}

#[view]
fn owner() -> ContractAddress {
  _owner::read()
}

there is then an ABI map entry with key owner that ends up getting matched to the owner substring of first_owner, which causes it to get selected as the constructorAbi in the StarknetContractFactory constructor if it is encountered before the real constructor.

this replaces the includes() check with a regexp that should only match function names.