Add OpTypeRuntimeArray to composite types (KhronosGroup#5765)

Author: s-perron

source/opcode.cpp

@@ -276,6 +276,7 @@ int32_t spvOpcodeIsComposite(const spv::Op opcode) {
     case spv::Op::OpTypeMatrix:
     case spv::Op::OpTypeArray:
     case spv::Op::OpTypeStruct:
+    case spv::Op::OpTypeRuntimeArray:
     case spv::Op::OpTypeCooperativeMatrixNV:
     case spv::Op::OpTypeCooperativeMatrixKHR:
       return true;