Tab navigation is not working in RowSelection

[rajgopalk]

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**Current behavior**
I have attached screenshots for better understanding. In screen1, List grid is there. if we click on row. It is not navigating to that record tab ex: A15.6 TAB. if we click or double click on outside the tab area (Diagnosis(ICD) Details taskbar ). Then only it will navigate to A15.6 tab (Screen2) or If we $apply(), in this case also it is working fine (if we click on A15.6 it will navigate to A15.6 tab without click on outside tab area)
***********NOTE******************
If we apply $apply(). Then only we will get Expected behavior.
***********NOTE END******************

**Expected behavior**
if we click on row(Row selection event), It will create new tab and navigate to that tab.

**Minimal reproduction of the problem with instructions**
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**What is the motivation / use case for changing the behavior?**
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**Please tell us about your environment:**
<!-- Operating system, IDE, package manager, HTTP server, ... -->
Windows 10

* **ag-Grid-Enterprise version:** 2.0.X
v.20

* **Browser:** [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]
<!-- All browsers where this could be reproduced -->
All browsers it is happening the same

* **Language:** [all | TypeScript X.X | ES6/7 | ES5]
javascript, angularjs V.20

![1](https://user-images.githubusercontent.com/22521609/53937635-b62a1880-40d3-11e9-8550-8da8379ec380.png)
![2](https://user-images.githubusercontent.com/22521609/53937638-ba563600-40d3-11e9-9c90-991cb7d5ef72.png)