isolate interface name resolution checks

test/error/interface_bad_expr_module.sv

@@ -0,0 +1,12 @@
+// pattern: inlining instance "mod" of module "Module" would make expression "x" used in "mod" resolvable when it wasn't previously
+// location: interface_bad_expr_module.sv:6:5
+interface Interface;
+endinterface
+module Module(Interface i);
+    assign x = 1;
+endmodule
+module top;
+    wire x;
+    Interface intf();
+    Module mod(intf);
+endmodule