chore(test): Add more unit tests for inline_functions_with_at_most_one_instruction

[aakoshh]

Description

Problem*

Part of #8218

Summary*

Added some unit tests to cover the conditions in should_inline_call by first commenting out one of the if and then check if there is a unit test that fails.

Additional Context

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.

[vezenovm]

Only &mut worked not &? Approving if that is the case, otherwise lets switch that before merging.

[aakoshh]

Only &mut worked not &?

Unfortunately not, because the macro needs mutable reference or take ownership to be able to normalize the IDs:

let mut mut_ssa = $ssa;
mut_ssa.normalize_ids();