igCombo does not remove focus and blur events from the input on destroy

[Plamena Miteva]

Description

jQuery 3.4.0 release introduces some changes regarding focus, blur and click events and as a result focus and blur events are not removed from the input when igCombo is destroyed.

• jQuery: 3.4.1
• ignite-ui version: 19.1
• browser: All

Steps to reproduce

Run combo rendering test '[ID4] igCombo input rendering' with jQuery v.3.4.1

Result

Focus and blur events are not removed

Expected result

Focus and blur events should be removed

[Nikolay Alipiev]

There is a bug in jQuery 3.4.0. They attach focus and blur handlers, which are not removed afterward. Temporary one of the asserts is removed.