Check for the accessible symbol from exported import

eg:
```TypeScript
// @Filename: w1.ts
export = Widget1
class Widget1 { name = 'one'; }

// @Filename: exporter.ts
export import w = require('./w1');

// @Filename: consumer.ts
import e = require('./exporter');

export function w(): e.w { // Should be OK
    return new e.w();
}
```

In this looking for the name of return type of function w,
not just look for the alias == SymbolOfReturnType but also
look for alias.exportedSymbols === symbolOfReturnType
and qualify it during the toString