JIT

gh-149965: Improve thread-safety in ElementObjects within `element_ass_subscr` #6731

Job	Run time
i686-pc-windows-msvc/msvc (Release)	9m 42s
aarch64-pc-windows-msvc/msvc (Release)	10m 21s
x86_64-unknown-linux-gnu/gcc (Debug)	13m 25s
x86_64-pc-windows-msvc/msvc (Release)	9m 59s
aarch64-unknown-linux-gnu/gcc (Debug)	9m 38s
x86_64-apple-darwin/clang (Release)	13m 29s
JIT with tail calling interpreter	4m 25s
x86_64-unknown-linux-gnu/gcc (Release)	9m 15s
aarch64-apple-darwin/clang (Debug)	13m 31s
aarch64-pc-windows-msvc/msvc (Debug)	9m 46s
Free-Threaded (Debug)	4m 6s
aarch64-apple-darwin/clang (Release)	13m 18s
Interpreter (Debug)	13m 23s
x86_64-pc-windows-msvc/msvc (Debug)	6m 29s
x86_64-apple-darwin/clang (Debug)	13m 25s
JIT without optimizations (Debug)	4m 28s
aarch64-unknown-linux-gnu/gcc (Release)	7m 19s
i686-pc-windows-msvc/msvc (Debug)	8m 24s
	2h 54m 23s

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