Issue: RenderingTypePredictor loses learned predictions after crawler migration or pause/resume cycles

Issue: RenderingTypePredictor loses learned predictions after crawler migration or pause/resume cycles: a task in LegoFlow-SWE (Harbor dataset). Observed symptom When an AdaptivePlaywrightCrawler migrates or pauses and then resumes, the rendering type predictions (static vs dynamic pages) that the…

The task

**Observed symptom** When an `AdaptivePlaywrightCrawler` migrates or pauses and then resumes, the rendering type predictions (static vs dynamic pages) that the `RenderingTypePredictor` has learned are discarded. This causes the predictor to start from scratch, leading to:

Part of Lego-X/LegoFlow-SWE.