[RV64_DYNAREC] Fixed MAXSS and MAXSD for vector #4418

Job	Run time
build (X64, Release, ubuntu-latest)	1m 40s
build (X64, Trace, ubuntu-latest)	1m 56s
build (X64, Box32, ubuntu-latest)	1m 39s
build (RISCV, Release, ubuntu-latest)	6m 5s
build (RISCV, Trace, ubuntu-latest)	6m 28s
build (RISCV, StaticBuild, ubuntu-latest)	4m 36s
build (RISCV, Box32, ubuntu-latest)	6m 40s
build (RK3588, Release, ubuntu-latest)	5m 39s
build (RK3588, Trace, ubuntu-latest)	5m 38s
build (RK3588, StaticBuild, ubuntu-latest)	3m 56s
build (RK3588, Box32, ubuntu-latest)	5m 49s
build (ARM64, Release, ubuntu-latest)	5m 35s
build (ARM64, Trace, ubuntu-latest)	5m 52s
build (ARM64, StaticBuild, ubuntu-latest)	3m 58s
build (ARM64, Box32, ubuntu-latest)	6m 1s
build (ANDROID, Release, ubuntu-latest)	2m 9s
build (ANDROID, Trace, ubuntu-latest)	2m 17s
build (TERMUX, Release, ubuntu-latest)	2m 4s
build (TERMUX, Trace, ubuntu-latest)	2m 25s
build (LARCH64, Release, ubuntu-latest)	3m 22s
build (LARCH64, Trace, ubuntu-latest)	3m 36s
build (LARCH64, StaticBuild, ubuntu-latest)	1m 52s
build (LARCH64, Box32, ubuntu-latest)	3m 46s
	1h 33m 3s

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