Describe the bug

Michael Winterberg wrote:

The <random> header still provides uniform_int and uniform_real in the std namespace despite them never being standardized in the IS. Since they're the implementation base classes for the actual standard class templates uniform_int_distribution and uniform_real_distribution, I'm guessing this will have to wait for the mystical future ABI break. The main pain is that since uniform_int is much shorter to type than uniform_int_distribution it's easy to use them accidentally.

Also tracked by DevCom-381099 and Microsoft-internal VSO-729899 / AB#729899.