NL 17.10.3p5 [support.contract.violation] evaluation_exception should be removed

[jensmaurer]

The function evaluation_exception specified in the contract_violation objects created by the contract violation
handler may have a security risk on one platform, and offers insufficient tangible benefit for the risk it causes.
We propose to remove it from C++26 to potentially be added back in '29 if we can show that the security risk
does not actually materialize on that platform. See also P3819.

[inbal2l]

Duplicate (in terms of outcome) with: #703, #704