[Hosting] Extensions should not require LaunchActivatedEventArgs

[MartinZikmund]

Current behavior

Currently builder requires LaunchActivatedEventArgs, which means it is unusable if the app is launched via any non-launch path - e.g. OnActivated via protocol activation or jumplist (in these cases OnLaunched never executes). Instead, it should either be possible to initialize the host without any arguments (it seems to me that it does not even use them currently?) or provide alternatives, e.g. IActivatedEventArgs

Expected behavior

Should be possible to use with OnActivated execution path.

How to reproduce it (as minimally and precisely as possible)

Environment

Nuget Package (s):

Package Version(s):

Affected platform(s):

All

Visual Studio:

• 2019 (version: )
• 2022 (version: )
• Visual Studio Code (version: )
• Rider Windows (version: )
• Rider macOS (version: )

Relevant plugins:

• Resharper (version: )

Anything else we need to know?