Update code accessing contract fields - re: FLIP 277

[sisyphusSmiling]

Issue To Be Solved

Recent updates to how contracts are imported (see FLIP 277) and their values are accessed have impacted a number of transactions and scripts in this repo.

Suggest A Solution

Uncover and refactor the affected transactions and scripts. Will also need to determine if this new change affects any contract syntax as a number of contract fields are accessed between bridge contracts.

🚫 Testing refactors and assessing required contract syntax changes is blocked for the moment until we get an updated CLI pre-release running Cadence v1.0.0-preview.35 as errors that might occur may only emerge at runtime. <- unblocked by release of Flow CLI v1.21.0-cadence-v1.0.0-preview.28

Context

Found while deploying and configuring the bridge on latest Crescendo network.
Related Discord thread