build

2.6.99.3 #863

Job	Run time
build ubsan+tsan macos-latest clang-19	12m 44s
build ubuntu-24.04 clang-18	2m 22s
build macos-latest clang-19	4m 19s
build ubsan+tsan ubuntu-24.04 clang-18	4m 50s
build asan+lsan ubuntu-24.04 clang-18	2m 7s
	26m 22s

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