gh-134584: Eliminate redundant refcounting in JIT for `MATCH_CLASS` #2370

Job	Run time
x86_64-pc-windows-msvc/msvc	9m 56s
aarch64-apple-darwin/clang	8m 6s
x86_64-apple-darwin/clang	18m 14s
aarch64-unknown-linux-gnu/gcc	7m 16s
x86_64-pc-windows-msvc/msvc-free-threading	4m 36s
x86_64-unknown-linux-gnu/gcc	10m 10s
x86_64-unknown-linux-gnu/gcc-free-threading	8m 41s
	1h 6m 59s

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