ensure that we have an import_std configuration in the test-set #1813

Job	Run time
Generate build matrix for CMake Test Package CI	5s
Apple Clang 15 C++20 fmtlib gsl-lite Debug	1m 24s
Apple Clang 15 C++23 fmtlib ms-gsl Debug	59s
Clang-16 (x86-64) C++20 fmtlib gsl-lite Debug	1m 6s
Clang-16 (x86-64) C++20 fmtlib gsl-lite Release	1m 26s
GCC-12 C++20 fmtlib gsl-lite Debug	44s
GCC-12 C++20 fmtlib gsl-lite Release	43s
GCC-13 C++23 fmtlib none Release	29s
GCC-14 C++23 fmtlib gsl-lite Debug	40s
Clang-17 (x86-64) C++20 std::format gsl-lite Debug	1m 17s
Clang-17 (x86-64) C++20 std::format ms-gsl Release	1m 16s
Clang-18 (arm64) C++20 std::format gsl-lite Debug	57s
Clang-18 (x86-64) C++20 std::format gsl-lite Debug	1m 3s
GCC-13 C++20 std::format gsl-lite Debug	42s
GCC-14 C++20 std::format gsl-lite Debug	34s
MSVC 14.4 C++20 std::format gsl-lite Debug	2m 9s
MSVC 14.4 C++20 std::format none Debug	1m 58s
Clang-17 (x86-64) C++20 std::format gsl-lite Debug	1m 12s
Clang-18 (arm64) C++20 std::format gsl-lite Debug	1m 3s
Clang-18 (x86-64) C++20 std::format gsl-lite Debug	1m 15s
Clang-18 (x86-64) C++23 std::format none Debug	1m 29s
	22m 31s

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