Context

Refactor Dal unit & pbt tests to run them on all available protocol parameters (mainnet, sandbox & test)

The unique commit of this MR was part of !6553 (merged). I separated it for review parallelization.

Manually testing the MR

Document the interface of any function added or modified (see the coding guidelines)
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Provide automatic testing (see the testing guide).
For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
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