Show "Install-Pre Release" button if I have the stable version of an extension

[weinand]

Testing #138068

When I have "Mock Debug" (stable) installed, and search for Mock Debug I see this:

If I don't have "Mock Debug" installed, and search for Mock Debug I see this:

I wonder why is there no prominent "Install-Pre Release" button in the first case?

[sandy081]

We wanted to be as less noisy as possible here. Hence, we used the bookmark/badge on the top left corner to indicate that extension has pre-release version. Showing the action might be too aggressive if users do not want to install pre-release. We show this button explicitly when you open in the extension editor and also available in the context menu / gear dropdown.

CC @isidorn @misolori

[weinand]

Why are we agressive with new users, but not with existing users?
IMO that's backwards.

[sandy081]

Showing this when not installed fits well with the install flow, but showing this when release version is already installed makes my installed section view overloaded with these buttons which I cannot get rid off. For eg, if I do not want to opt into pre-releases, my extensions view will look like as follows and I am sure I would not like this.

For existing users it is important to provide a way for them to discover that there is a pre-release available for an extension. Currently we are doing this by showing the pre-release badge as follows

Hoping that this is good enough unless if there are better ideas.