Adapt acceptance tests to use MirrorNodeContractEstimateGasQuery for gas estimations

[nickeynikolovv]

Problem

In java SDK there is a MirrorNodeContractEstimateGasQuery which can be used for gas estimation queries. Currently we perform manually a contract call with given parameters.

Solution

Adapt the tests to use MirrorNodeContractEstimateGasQuery from the SDK

Alternatives

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[steven-sheehy]

Since we can't pass a modularized header, this is blocked on contract call being completely migrated to modularized code.