fix: unused `convertible_kinds()` argument removed #454

Job	Run time
Generate build matrix for Freestanding CI	4s
Clang-18 (x86-64) C++23 fmtlib none Release	1m 59s
Clang-18 (x86-64) C++23 std::format none Release	2m 4s
GCC-14 C++23 fmtlib none Debug	1m 26s
GCC-14 C++23 fmtlib none Release	1m 16s
GCC-14 C++23 std::format none Debug	1m 24s
GCC-14 C++23 std::format none Release	1m 14s
	9m 27s

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