const_if_match
The tracking issue for this feature is: #49146
Allows for the use of conditionals (if and match) in a const context.
Const contexts include static, static mut, const, const fn, const
generics, and array initializers. Enabling this feature flag will also make
&& and || function normally in a const-context by removing the hack that
replaces them with their non-short-circuiting equivalents, & and |, in a
const or static.