chore!: convert TraitMethodNotInScope to error

[TomAFrench]

Description

Problem*

Part of #6932

Summary*

Additional Context

Documentation*

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PR Checklist*

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

[TomAFrench]

@kashbrti Looks like we're triggering this error in some of the noir libraries. It should just need the trait to be imported (there should be warnings being emitted for these), can you take a look at fixing these?

[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: 929cdbe	Previous: 757e3c4	Ratio
AztecProtocol_aztec-packages_noir-projects_noir-protocol-circuits_crates_blob	66 s	54 s	1.22

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

CC: @TomAFrench

[kashbrti]

@TomAFrench the issue with noir-rsa is actually stemming from bignum. I made a change so that the RuntimeBignumTrait would be public. also made a change in noir-edwards.