Rethrow for bounds error when modifying constant vector

[blegat]

Not a fan of the try-catch, I would have preferred an approach like #2975 but it would be breaking

[odow]

We could implement the other approach and then run solver-tests? Arguably ignoring BoundsError like this is a bug.

[odow]

https://github.com/jump-dev/MathOptInterface.jl/actions/runs/23324992900

[odow]

@blegat how's this?

[blegat]

Good idea. Actually, we could return missing or return MOI.ModifyConstraintNotAllowed to avoid defining a new type, but it's maybe a bit hacky. Since the struct we define is internal, what we return is purely inside MOI anyway.