Tree filter not fully working correctly

[jaewhyun]

Description

Tree filtering doesn't return all the child nodes

Expected Behaviour

If I search for "Composite," it should return everything under the Composite subheader including FloatDict and its descendants under Methods.

Current Behaviour

If I search for "Composite," it returns everything under the Composite subheader EXCEPT it's children's children.

Steps to Reproduce

1. Type "composite" into the Search Bar
2. Click Search
3. See the nodes under Composite
4. Click on FloatDict

Possible Causes

Logic in the TreeNodeBuilder class is probably wrong