PSAvoidAssignmentToAutomaticVariable generates false positives during script analysis

Steps to reproduce

Run this function through PSSA.

function Write-Log {
    [CmdletBinding()]
    param
    (
        [Parameter(Position = 0, Mandatory)]
        [ValidateNotNullOrEmpty()]
        [string]
        $Message,

        [switch]
        $Error
    )
    $callerEAP = $ErrorActionPreference
    try {
        $messageColor = if ($PSCmdlet.MyInvocation.BoundParameters.ContainsKey('Error') -and $Error) {
            [ConsoleColor]::Red
        } else {
            [ConsoleColor]::Cyan
        }

        Write-Host -Foreground $messageColor -Object $Message

        # Reset colors to return to default after an error message on a compilation error
        [System.Console]::ResetColor()
    } catch {
        Write-Error -ErrorRecord $_ -ErrorAction $callerEAP
    }
}

Expected behavior

It passes.

Actual behavior

PSSA reports the following:

The Variable 'Error' cannot be assigned since it is a readonly automatic variable that is built into PowerShell, please use a different name.

There are a number of problems with this:

1. The comma should be a period for it to read properly.
2. The error text is incorrect. $Error can be assigned in child scopes without issue. $Error is read-only only in the global scope, and errors are automatically written into that globally-scoped collection that is read-only from PowerShell. In functions, or child scopes, you can use a $Error variable to your hearts content.
3. Most importantly: the issue that is being called out by PSSA here should not be called out at all.

Environment data

> $PSVersionTable
Name                           Value
----                           -----
PSVersion                      7.0.1
PSEdition                      Core
GitCommitId                    7.0.1
OS                             Microsoft Windows 10.0.18363
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0
> (Get-Module -ListAvailable PSScriptAnalyzer).Version | ForEach-Object { $_.ToString() }
1.19.0

まず、提供された Write-Log 関数を PSScriptAnalyzer にかけ、$Error パラメーターを報告する PSAvoidAssignmentToAutomaticVariable ルールを調査します。示されている PowerShell のスコープ動作に照らして診断を確認します。このケースが報告されず、他の場所では引き続き該当する場合は診断テキストが修正されれば完了です。