[RISC-V] Add a call to RISCV_MC::verifyInstructionPredicates in AsmParser

This ensures the broken Asmparser expansions trigger an assertion error.
Noticed this while adding Y extension support where expanding pseudos
generated instructions that were failing predicates but unlike
instructions generated during codegen the predicate verification function
was not being called here.

Author: arichardson

llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp

@@ -3545,6 +3545,8 @@ void RISCVAsmParser::emitToStreamer(MCStreamer &S, const MCInst &Inst) {
     Res = RISCVRVC::compress(CInst, Inst, STI);
   if (Res)
     ++RISCVNumInstrsCompressed;
+  // Ensure that we don't emit instructions with missing predicates.
+  RISCV_MC::verifyInstructionPredicates(Inst.getOpcode(), STI.getFeatureBits());
   S.emitInstruction((Res ? CInst : Inst), STI);
 }