module: fix parsing and enable bug_issue_3257 back

[obastemur]

The test was disabled for a while. We got a VSO item tracking it separately (though that issue is partially fixed now). Opening a new issue here.

The issue doesn't repro on a direct run from command line. I suspect the problem is either path or timing related. Assigning myself for now.

[obastemur]

Test case below also fails

//test.js
WScript.LoadScriptFile("module0/module0.js","module");
//module0/module0.js
import "module1.js";
import "module2.js";
//module1.js
import "module2.js";
//module2.js
import "module0/module0.js";

EDIT: this was added / fixed

[obastemur]

fixed