[Eng]: Does Get-AzContext need to use dynamic parameters?

[isra-fel]

Description

Problem

The -Name parameter of Get-AzContext is a dynamic parameter. It exists only when there are contexts available (code).

Get-AzContext [-DefaultProfile <IAzureContextContainer>] [[-Name] <String>] [<CommonParameters>]

It leads to instability in release process. The version bump up tool may have different results on different environments depending on whether there are contexts.

Action

We need to re-evaluate the necessity of defining -Name as a dynamic parameter, and if it's not worth it, change it to a normal one.

[isra-fel]

As of why the code is like this, my guess is we want to put a ValidateSet attribute on the Name parameter, but we also want the set to be dynamic, which is impossible unless Name is a dynamic parameter.
In fact, it can be rewritten as an ArgumentCompleter + dedicated validation logic. This way Name can be a normal parameter.