[Python] Fix: flaky python test, remove some unused / deprecated stuff (#3627)

* chore: add debugging to test

* chore: migrate more tasks to new versions

* fix: more deprecations

* chore: rm a bunch of removed examples

* fix: helpful error for wrong workflow type at runtime

* chore: docs

* fix: add plugin, try making on demand worker function scoped

* chore: regenerate docs

* chore: lint

* chore: version

Author: mrkaye97