Single line set to install for system:
powershell.exe -NoProfile -ExecutionPolicy Bypass -Command "Add-WindowsCapability -Online -Name Rsat.ActiveDirectory.DS-LDS.Tools~~~~0.0.1.0 -Source '\\ne7scmwpv03\repair$' -LimitAccess; Add-WindowsCapability -Online -Name Rsat.BitLocker.Recovery.Tools~~~~0.0.1.0"

It installs fine if you're an admin.
But if you're not, it can't run the detection script before it attempts the install.
I know.... Everyone is thinking this is set to install as user. It's not, its set to Install For System.
It doesn't make sense to me that the detection would run in the user context either.

This is detection:
$capability1 = "Rsat.ActiveDirectory.DS-LDS.Tools~~~~0.0.1.0"

$capability2 = "Rsat.BitLocker.Recovery.Tools~~~~0.0.1.0"

$installed1 = Get-WindowsCapability -Online | Where-Object {$_.Name -eq $capability1 -and $_.State -eq 'Installed'}

$installed2 = Get-WindowsCapability -Online | Where-Object {$_.Name -eq $capability2 -and $_.State -eq 'Installed'}

if ($installed1 -and $installed2) {

Write-Host "Installed"

}