[roottest] adjuct `core` tests, delete `html` as obsolete #22986

Job	Run time
mac13 ARM64 builtin_zlib=ON	25m 52s
Windows 10 x64 Release	1h 12m 17s
mac15 ARM64 CMAKE_CXX_STANDARD=23	22m 38s
mac14 X64 CMAKE_CXX_STANDARD=20	2h 20m 29s
mac-beta ARM64 CMAKE_CXX_STANDARD=23	43m 7s
Windows 10 x86 Release	1h 6m 7s
ubuntu2404 CMAKE_BUILD_TYPE=Debug	1h 28m 4s
debian125 CMAKE_CXX_STANDARD=20, dev=ON, CMAKE_CXX_FLAGS=-Wsuggest-override	35m 55s
alma9 modules_off runtime_cxxmodules=Off	32m 13s
fedora42 CMAKE_CXX_STANDARD=23	38m 30s
Upload Event Payload	3s
ubuntu2504 CMAKE_CXX_STANDARD=23	43m 50s
ubuntu22 imt=Off, CMAKE_BUILD_TYPE=Debug	1h 23m 40s
alma10	32m 19s
alma9 march_native CMAKE_BUILD_TYPE=RelWithDebInfo, CMAKE_CXX_FLAGS=-march=native, CMAKE_C_FLAGS=-march=native, builtin_zlib=ON, builtin_zstd=ON	35m 14s
rawhide Fedora pydebug CMAKE_CXX_STANDARD=23	36m 39s
fedora43 CMAKE_CXX_STANDARD=23	33m 27s
ubuntu2510 CMAKE_CXX_STANDARD=23	39m 51s
alma8	33m 59s
alma10 clang Ninja CMAKE_C_COMPILER=clang, CMAKE_CXX_COMPILER=clang++	29m 5s
alma9 arm64 CMAKE_BUILD_TYPE=RelWithDebInfo, builtin_zlib=ON, builtin_zstd=ON	48m 9s
alma9 CMAKE_BUILD_TYPE=Debug	1h 14m 18s
	17h 35m 46s

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