Lite: Capture stdout and stderr from the main thread (#9984)
* Add stdout and stderr events
* add changeset
* Refactoring
* Format App.tsx
* add changeset
* Add python-error event to capture Python errors occurring in the running event loop after the initial app launch
* Fix <ErrorDisplay />'s close button
* Fix <ErrorDisplay />
* Propagate python-error and initialization-error events to the controller
* Add init-code|file-run-error events
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