JIT

gh-151223: fix tsan data races in load global specializations #6754

Job	Run time
Interpreter (Debug)	14m 17s
Free-Threaded (Debug)	4m 16s
x86_64-pc-windows-msvc/msvc (Debug)	27m 32s
x86_64-apple-darwin/clang (Release)	1h 0m 17s
JIT with tail calling interpreter	4m 27s
i686-pc-windows-msvc/msvc (Debug)	26m 58s
x86_64-unknown-linux-gnu/gcc (Debug)	14m 30s
x86_64-pc-windows-msvc/msvc (Release)	16m 21s
i686-pc-windows-msvc/msvc (Release)	16m 35s
aarch64-unknown-linux-gnu/gcc (Debug)	10m 37s
aarch64-pc-windows-msvc/msvc (Release)	19m 36s
aarch64-pc-windows-msvc/msvc (Debug)	25m 33s
JIT without optimizations (Debug)	3m 19s
x86_64-unknown-linux-gnu/gcc (Release)	9m 18s
x86_64-apple-darwin/clang (Debug)	36m 57s
aarch64-unknown-linux-gnu/gcc (Release)	6m 52s
aarch64-apple-darwin/clang (Debug)	15m 30s
aarch64-apple-darwin/clang (Release)	14m 9s
	5h 27m 4s

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