ScriptConsole cannot be re-created mid-session for persistent panels/modeless windows

[Wurschdhaud]

For dockable panes and modeless windows (WPFMixin_ subclasses), the output window persists across command executions. When the user closes it, re-creating a functional ScriptConsole mid-session crashes Revit regardless of approach.

Attempted fixes (all crash):

• new ScriptConsole() + swap into EXEC_PARAMS.window_handle + rewire ScriptIO/sys.stdout — mirrors sessionmgr._setup_output() but crashes mid-session
• ScriptConsoleManager.CreateDetached() with explicit Show() on Dispatcher — crashes on show
• Both with and without pre-registration in AppendToOutputWindowList

Suspected causes:

• SetupDefaultPage() runs a DoEvents() busy-wait in the constructor, causing message loop re-entrancy when called outside the normal startup context
• ScriptConsole may have implicit dependencies on the startup execution environment that aren't met when constructed on-demand

Expected behaviour: For persistent panels, closing the output window and re-running any panel method should produce a fresh, functional output window — the same behaviour regular commands get on each run.

Workaround: None currently.