Igniteui-angular: Filtering input gets populated on keyboard action

[hanastasov]

Description

• [ ] - 1. Filtering input gets populated on keyboard action

• [ ] - 2. X clear icon dissappers after activating/deactivating the chip:
  

  • igniteui-angular version: 6.2.0, 7.0.0

Steps to reproduce #1

1. Go to https://stackblitz.com/angular/brljdreeyelm
2. Click the filter button for OpenPrice column
3. Use the arrow down key to open the dropdown with filterin conditions

Result

The input is populated with "-1":

Steps to reproduce #2

1. Open filter for a column and type value in the input
2. Deactivate the chip
3. Activate the cip and the X icon dissappears

[sstoyanovIG]

From now on the drop down will be opened with Alt+ Arrow Down, because for numeric columns the down arrow decrements the value.

[hanastasov]

It would be good to update the grid-filtering topic with a section covering the keyboard navigation over the filtering ui.