gh-148235: remove duplicate uops `_LOAD_CONST_UNDER_INLINE(_BORROW)` … #2280

Job	Run time
aarch64-unknown-linux-gnu/gcc	7m 5s
x86_64-unknown-linux-gnu/gcc-free-threading	8m 17s
x86_64-unknown-linux-gnu/gcc	9m 45s
aarch64-apple-darwin/clang	11m 18s
x86_64-apple-darwin/clang	18m 43s
	55m 8s

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