searching for methods to implement or override does not find those in closed folders (classes)

### Description

Here is my example for overwriting *setEnabled* from a simple JButton.


If I start searching by typing *setEnabled* the method is not found like in the sample screenshot, this works only if at first I open the class - folder where this method is defined. That's quite annoying since most of the time I do not know in which superclass this method is.

### Use case/motivation

_No response_

### Related issues

_No response_

### Are you willing to submit a pull request?

No

Start by reproducing the method search with JButton.setEnabled while the defining superclass folder is closed. Trace the method-search behavior to determine why closed class folders are skipped; done means searching for setEnabled finds the method without first opening its defining class.

Written by the indexing model from the issue text.