[Lint] Fix TupleConvention wrong spacing

[gnrkr789]

TupleConvention rule fails to detect invalid tuple spacing in some cases.

Example of invalid spacing that should be reported:

| 12UL, _ , 0u -> ...

Correct form:

| 12UL, _, 0u -> ...

Previously, cases involving comments could cause false negatives.
This update ensures _ , is properly detected even when comments are present.

For comment cases such as:

match foo with
| 42 (* comment *), 2 -> ()

spacing around the comment itself is handled more loosely, while tuple comma rules remain strictly enforced.