fix: issue with extra suffix parts in imported sources

[antazoey]

What I did

issue where could not compile contracts that imports contracts with deeper suffixes.
for example if you are compiling Contract.sol and it was using Contract.v1.sol, it would fail because ape-solidity is only registered for .sol and not v1.sol.

This makes it work.

requires this though ApeWorX/ape#2123

also fixes a bug where flattening mistook some things in comments for import statements and hell broke loose

How I did it

How to verify it

Checklist

• Passes all linting checks (pre-commit and CI jobs)
• New test cases have been added and are passing
• Documentation has been updated
• PR title follows Conventional Commit standard (will be automatically included in the changelog)

[antazoey]

As always, only getting this error in CI/CD and not locally.

[dtdang]

As always, only getting this error in CI/CD and not locally.

Ran this locally and also got the same error on the same test on my end.

[antazoey]

OK turns out it was a real bug with flattening.
Should be good now, ill make sure it is also mentioned in the release notes.