Can't install extension on the server from extension viewlet

[kieferrm]

Testing #83500.

1. Create an extension with the following snippet in package.json:

	"extensionKind": [ "ui", "workspace" ],

2. Create vsix
3. Open a remote SSH workspace
4. Install vsix
   -> extension is installed locally, i.e. on the UI side
   -> Extension does not show the green batch to be installed on the remote box. I'd expect this to be there as the extension can support both locations.

[sandy081]

As per my understanding this is an extension that preferably runs on local extension host if exists on both (local and remote). For eg., theme extensions.

So, is it expected to install such extension on both sides when asked to install?

[vscodebot]

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[kieferrm]

I don't expect it to be installed on both side. What I expected was that once it's installed on one side that there is an intuitive way for me to install it on the "other" side. Admittedly, that would complicate the UI but at the same time we support a user setting for it.

[sandy081]

How will it be helpful for the user to have a button to install on remote given that this extension preferably runs on UI side. It means this action just install the extension on the remote which will not run in the current window. IMO an UI action which is prominent should be useful after applying.

[kieferrm]

I manage extensions not just for the current client but also for VSO or other installs of VS Code. So, installing an extension as a workspace extension might not have an immediate effect but is still important to me.

[sandy081]

For such case, instead of a prominent UI button, we shall allow user install UI extensions on remote using a command. We already have a command Install Extension in Remote which allows only workspace extensions. I will include all workspace (workspace, ui+workspace) extensions here.