fix(codegen): look at struct args (generics) when generating structs

[asterite]

Description

Problem

Resolves #9044

Summary

The fix in the previous PR was wrong. Nested structs were generated. It's just that at one point generic struct field types get replaced with bindings, and the bindings (possibly structs) end up in an args field. So what was missing is taking a look at args to find more structs to generate.

Additional Context

I added rm -rf ./test/test_lib/export to the test script because otherwise when you made changed to the Noir code some old code might remain there and error, and it can be a bit misleading.

Documentation

Check one:

• No documentation needed.
• Documentation included in this PR.
• [For Experimental Features] Documentation to be submitted in a separate PR.

PR Checklist

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt on default settings.

[socket-security]

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[github-actions]

⚠️ Performance Alert ⚠️

Possible performance regression was detected for benchmark 'Compilation Time'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.20.

Benchmark suite	Current: 02ef0bd	Previous: de2a1bd	Ratio
rollup-root	1.7 s	1.37 s	1.24

This comment was automatically generated by workflow using github-action-benchmark.

CC: @TomAFrench

[github-actions]

⚠️ Performance Alert ⚠️

Possible performance regression was detected for benchmark 'Test Suite Duration'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.20.

Benchmark suite	Current: 3052df2	Previous: de2a1bd	Ratio
test_report_zkpassport_noir_rsa_	2 s	1 s	2

This comment was automatically generated by workflow using github-action-benchmark.

CC: @TomAFrench

[asterite]

Even though this seems correct it ends up generating duplicated structs in some cases. I'm not going to work on this for now so I'll close this.