Deep-copy bootstrap arguments array in BootstrapMethod.copy()

[rootvector2]

BootstrapMethod.copy() is documented as a deep copy but returns clone(), which leaves the copy sharing the mutable bootstrapArguments int[] with its source; the copy constructor BootstrapMethod(BootstrapMethod) shares it too. Because getBootstrapArguments() returns the raw array, setBootstrapArguments swaps it, and dump() writes it, mutating a copied entry's arguments silently rewrites the original's dumped bytes. Found while checking the per-entry copy() contracts against StackMapEntry.copy(), which reallocates its arrays. Cloning the int[] in both copy paths makes each copy independent.

ModuleExports/ModuleOpens/ModuleProvides also clone() an int[], but keep it final with no raw getter or setter, so their aliasing is not observable and is left unchanged.

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