`vector division operators` behavior test fails on RISC-V with vector support enabled

[alexrp]

test-modules
└─ test-behavior
   └─ run test behavior-native-spacemit_x60-ReleaseSmall-single
      └─ compile test ReleaseSmall native failure
error: Can't create an unknown libcall!
UNREACHABLE executed at /home/alexrp/llvm-project/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:2150!

error: the following command terminated unexpectedly:
/home/alexrp/zig1/build/debug/bin/zig test -fsingle-threaded -OReleaseSmall -Mroot=/home/alexrp/zig1/test/behavior.zig --cache-dir .zig-cache --global-cache-dir /home/alexrp/.cache/zig --name test -L /home/alexrp/prefix/lib -I /home/alexrp/prefix/include --zig-lib-dir /home/alexrp/zig1/lib --listen=-