Pavel Yaskevich cd9c37cac6 [ConstraintSystem] C++ Interop: Binding a string literal to std.string shouldn't increase the score ...

Since this is a C++ stdlib type we need make sure that any overloads
that use it are preferred over custom types that also conform to
`ExpressibleByStringLiteral` when argument is a string literal.

This is important for operators like `==` which could be heterogenous
and have a custom C++ type that conforms to `ExpressibleByStringLiteral`
on either side together with `std.string` i.e.
`==(std.string, const CustomString &)`, such overloads should only
be selected if argument passed to `CustomString` is non-literal because
literals are convered by a stdlib `==(std.string, std.string)` overload.

2025-07-24 14:08:15 -07:00

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