[amazon-braket#240] AttributeError: 'ArrayLiteral' object has no attribute 'value'.

Fixes bug [amazon-braket#240] by casting node.size into IntegerLiteral

Author: EuGig

src/braket/default_simulator/openqasm/interpreter.py

@@ -247,7 +247,8 @@ def _(self, node: Identifier) -> LiteralType:
 
     @visit.register
     def _(self, node: QubitDeclaration) -> None:
-        size = self.visit(node.size).value if node.size else 1
+        size_arg = self.visit(node.size)
+        size = cast_to(IntegerLiteral, size_arg).value if size_arg else 1
         self.context.add_qubits(node.qubit.name, size)
 
     @visit.register