Run entire test suite with multiple values for inliner_aggressiveness

[TomAFrench]

We recently updated the test suite to run the stdlib tests with a range of potential inliner aggressiveness settings. In #6378 I've updated the default aggressiveness to 0 however this has resulted in a number of compilation failures.

We should update the test suite so that we run it with a range of inliner aggressiveness settings to match how we do it in the stdlib.

[aakoshh]

You mean literally the entire test suite, with a Github Workflow matrix strategy?
Or should we somehow identify tests that run the nargo cli?

I suppose it would help to add support for that value to come from an env var.

[aakoshh]

I'll look at the test failures, I see there are some tests which might work similarly to how the stdlib is decorated (and they don't use the CLI).

[TomAFrench]

By "entire test suite" I meant everything in test_programs. We codegen the tests in this file which we can modify to pass different values for the inliner_aggressiveness CLI option.

[aakoshh]

I thought I saw some other kinds of test failures, can't find them now 🙈