AArch64: VectorMaskToLong failed on SVE2 machine with -XX:UseSVE=1

Bug: Specify UseSVE=1 on SVE2 machine.

A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/mnt/local/ci-scripts/jdk_src/src/hotspot/cpu/aarch64/c2_MacroAssembler_aarch64.cpp:1046), pid=2235380, tid=2235395
# assert(false) failed: unsupported
#
JRE version: OpenJDK Runtime Environment (20.0) (fastdebug build 20-internal-git-277e7c486)
Java VM: OpenJDK 64-Bit Server VM (fastdebug 20-internal-git-277e7c486, mixed mode, compressed oops, compressed class ptrs, g1 gc, linux-aarch64)
Problematic frame:
V [libjvm.so+0x7daaa8] C2_MacroAssembler::sve_vmask_tolong(Register, PRegister, BasicType, int, FloatRegister, FloatRegister)+0x398
#
No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
An error report file with more information is saved as:
/tmp/work/scratch/hs_err_pid2235380.log
#
Compiler replay data is saved as:
/tmp/work/scratch/replay_pid2235380.log