Inconsistent constructor calls

[LHerskind]

When calling functions from a constructor, what works and what does not work is not consistent.

• constructor -> public √
• constructor -> public -> external public √
• constructor -> private: fails with failing to find the contract deployed.
• constructor -> external private: Fails with constructor_vk_hash doesn't match private_call_vk_hash issue
• constructor -> private -> external private: fails with failing to find the contract deployed.

It seems like it is generally not supported to do private function calls from the constructor. This is currently making the flow of the slow update tree with access control quite funky since I cannot set any initial roles.