Amazon keeps launching apps

[Slion]

With app launch set to Yes.
To get to the Amazon web site without app launch do a search for amazon.
Open amazon in background.
Switch to that tab.
I was already logged in but I think that also an issue when not logged in.
Click on Video tab will launch Chrome.
Click on Buy Again launches Chrome.
Click on Amazon Basics launches Amazon app.
Search for product and click on suggestion launches Amazon app.

You just can't do anything without triggering app launch it seems.
A workaround is to disable App Launch for the domain concerned.
However we ought to fix this without needing domain settings change as that's not how it works on Chrome.

This issue predates our changes for #612.