Wrong use of quick pick title and placeholder

[jrieken]

Testing #19883

• create an env
• the title part should provide orientation in a multi step quick pick
• the placeholder part should tell what to do, like "Select Interpreter"
• the currently selected env should be rendered with the env itself

[jrieken]

/cc @daviddossett for quick quick UX guidelines

[daviddossett]

the title part should provide orientation in a multi step quick pick

Generally I agree unless for some reason the placeholder can't be used to describe the purpose. Here's an example following the pattern typically used:

I'll address this in more detail as part of microsoft/vscode#158895

[karthiknadig]

@karrtikr The internal API for select environments needs a way to set the title.