Reference Code for https://stackoverflow.com/a/79279177/1404637

directObservation.ps1

function getSessionState {
    param($ScriptBlock)
    [scriptblock].
    GetProperty('SessionStateInternal',
                [System.Reflection.BindingFlags] 'NonPublic, Instance').
    GetValue($ScriptBlock)
}

foreach ($method in 'call'     ,
                    'steppable' ) {
foreach ($provenance in '{}'                     ,
                        '[scriptblock]::Create()',
                        '{}.Ast.GetScriptBlock()' ) {
    $sb     = $null
    $before = $null
    $after  = $null
    $sb =
        $(switch ($provenance) {
            '{}'  {
                switch ($method) {
                    'call'      {{. {}}}
                    'steppable' {{. {}}}
                }
            }
            '[scriptblock]::Create()' {[scriptblock]::Create({. {}})}
            '{}.Ast.GetScriptBlock()' {{. {}}.Ast.GetScriptBlock()}
        })
    $before = getSessionState $sb
    switch ($method) {
        'call'      {
            & $sb
        }
        'steppable' {
            . {
                [CmdletBinding()]param()
                $pipe = $sb.GetSteppablePipeline($MyInvocation.CommandOrigin,@())
                $pipe.Begin($PSCmdlet)
                $pipe.End()
            }
        }
    }
    [pscustomobject]@{
        method     = $method
        provenance = $provenance
        same       = if ($before) {[object]::ReferenceEquals($before,($after = getSessionState $sb))}
        before     = if ($before) {'yes'}
        after      = if ($after)  {'yes'}
    }
}}

steppableSessionState.ps1

function getSessionState {
    param($ScriptBlock)
    [scriptblock].
    GetProperty('SessionStateInternal',
                [System.Reflection.BindingFlags] 'NonPublic, Instance').
    GetValue($ScriptBlock)
}

$invoke = {
    [CmdletBinding()]param(
        $SubjectScriptBlock
    )
    $pipe = $SubjectScriptBlock.GetSteppablePipeline($MyInvocation.CommandOrigin,@())
    $pipe.Begin($PSCmdlet)
    $pipe.End()
}

$create  = & $invoke ([scriptblock]::Create({ . { getSessionState {} }}))
$literal = & $invoke { . { getSessionState {} }}
$local   = getSessionState {}
$module  = getSessionState (. (New-Module {}) {{}})

'literal',
'local',
'module' |
    ? {$create -and
       [object]::ReferenceEquals($create,
                                 (Get-Variable $_ -ValueOnly))}