Instruction introduction:
https://developer.arm.com/documentation/ddi0602/2022-03/SIMD-FP-Instructions/FJCVTZS--Floating-point-Javascript-Convert-to-Signed-fixed-point--rounding-toward-Zero-

Implementation reference: https://github.com/oxc-project/oxc/blob/bc1d716c5da777cdc59a6e35c31140f2e176dfd7/crates/oxc_ecmascript/src/to_int_32.rs#L39-L53

According to v8 test, the condition check on above implementation could be removed.
https://github.com/v8/v8/blob/3b58a432df85d51bf1c439c30efcf0752de1076f/test/cctest/test-assembler-arm64.cc#L11416C1-L11468C48