gh-134584: Eliminate redundant refcounting in JIT for `MATCH_CLASS` #2318

Job	Run time
x86_64-pc-windows-msvc/msvc	10m 28s
x86_64-apple-darwin/clang	20m 21s
aarch64-unknown-linux-gnu/gcc	7m 38s
aarch64-apple-darwin/clang	9m 8s
x86_64-pc-windows-msvc/msvc-free-threading	5m 4s
x86_64-unknown-linux-gnu/gcc	10m 34s
x86_64-unknown-linux-gnu/gcc-free-threading	8m 27s
	1h 11m 40s

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