general: Avoid ambiguous format_to compilation errors

Ensures that we're using the fmt version of format_to.

These are also the only three outliers. All of the other formatters we
have are properly qualified.

src/shader_recompiler/frontend/maxwell/opcodes.h

@@ -24,6 +24,6 @@ struct fmt::formatter<Shader::Maxwell::Opcode> {
     }
     template <typename FormatContext>
     auto format(const Shader::Maxwell::Opcode& opcode, FormatContext& ctx) {
-        return format_to(ctx.out(), "{}", NameOf(opcode));
+        return fmt::format_to(ctx.out(), "{}", NameOf(opcode));
     }
 };