Thanks for your responses. I modified the code to specify powershell7 and got the correct output.

def get_powershell_table(command):
    """Executes a PowerShell command and returns the formatted table output as a string."""
    try:
        result = subprocess.run(
            [r"C:\Program Files\PowerShell\7\pwsh.exe", "-Command", command],
            capture_output=True,
            text=True,
            check=True,
        )
        return result.stdout
    except subprocess.CalledProcessError as e:
        print(f"Error executing PowerShell command: {e}")
        return None