Re-enable std_example jit test #4485

Job	Run time
rustfmt	13s
todo_check	25s
dist (macos-15-intel, x86_64-apple-darwin)	9m 7s
dist (macos-latest, aarch64-apple-darwin)	1m 28s
test (windows-latest, x86_64-pc-windows-msvc)	16m 50s
test (ubuntu-latest, riscv64gc-unknown-linux-gnu, gcc-riscv64-linux-gnu qemu-user)	4m 42s
test (macos-latest, aarch64-apple-darwin)	13m 52s
test (ubuntu-24.04-arm, aarch64-unknown-linux-gnu)	10m 57s
dist (windows-latest, x86_64-pc-windows-gnu)	3m 17s
dist (windows-latest, x86_64-pc-windows-msvc)	2m 35s
dist (ubuntu-24.04-arm, aarch64-unknown-linux-gnu)	1m 43s
bench	5m 34s
test (windows-latest, x86_64-pc-windows-gnu)	22m 52s
dist (ubuntu-22.04, x86_64-unknown-linux-gnu)	1m 40s
test (ubuntu-latest, s390x-unknown-linux-gnu, gcc-s390x-linux-gnu qemu-user)	4m 38s
test_llvm	5m 22s
test (ubuntu-latest, x86_64-unknown-linux-gnu)	2m 33s
test (macos-15-intel, x86_64-apple-darwin)	2m 36s
release	-1s
	1h 50m 23s

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