AvoidAssignmentToAutomaticVariable doesn't distinguish between normal and DSC scripts

The AvoidAssignmentToAutomaticVariable rule doesn't distinguish between a normal script and a DSC script, meaning DSC specific auto-variables like $allNodes will cause complaints when the rule runs. I don't know if this is even something that could have logic applied to it in an effort to suppress, given there isn't necessarily an easy way to discern context of DSC vs Non-DSC scripts

Steps to reproduce

Create a standard powershell script ps1 file and enter the following. If in VS Code PSScriptAnalyzer automatically runs against it.

$allNodes = "Put anything here"

Expected behavior

Rule does not complain about usage of $allNodes as script is not used in DSC.

Actual behavior

The Variable 'allNodes' is an automatic variable that is built into PowerShell, assigning to it might have undesired side effects. If assignment is not by design, please use a different name.

Start from the AvoidAssignmentToAutomaticVariable rule and reproduce the issue with a standard PowerShell .ps1 containing an assignment to $allNodes. Determine whether the rule can distinguish DSC scripts from normal scripts, then verify that the normal-script case no longer reports this variable without changing the intended DSC behavior.