Close pages immediately after tasks finish to reduce resource usage and
improve overall performance. Update corresponding test files to reflect
the new page lifecycle management.
- Pages that get reused in rotation are possibly contaminated from previous settings used on them, and some are stubborn to remove, so the new approach replaces finished pages with new ones.
- Removed the `max_pages` from sync `StealthySession` to match `DynamicSession` (Doesn't mean anything in sync code)
Karim shoair