Prevent spawned Hardhat console from triggering a compile

[kevinbluer]

PR description

This PR prevents the spawned Hardhat console in from-hardhat from triggering a compile (via --no-compile). This is being added to mitigate a circular reference in an upcoming Hardhat plugin that provides support for Truffle Dashboard decoding/debugging.

Testing instructions

One testing approach...

• Create a local Hardhat project (via git clone https://github.com/amanusk/hardhat-template or equivalent)
• yarn link to the from-hardhat package from the above
• Run the following from the node REPL:
  • const FromHardhat = require("@truffle/from-hardhat");
  • await FromHardhat.prepareCompilations()

Documentation

• I thought about documentation and added the doc-change-required label to this PR if documentation updates are required.

Breaking changes and new features

• I have added any needed breaking-change and new-feature labels for the appropriate packages.

[cds-amal]

Looks good, @kevinbluer, though it would be prudent to comment why --no-compile is necessary for future maintainers.

Edit: tested with new hardhat project

[kevinbluer]

Comment added @cds-amal 👍 All good from your side @gnidan as I noticed the addition of the breaking-change: @truffle/from-hardhat label?

[cds-amal]

Hey @kevinbluer, the breaking change label is to communicate a breaking SemVer change (minor update) for the release process.

[kevinbluer]

Ah awesome 👍

[gnidan]

Yep all good now from my side! The label is just for housekeeping (for reasons stated)