refactor/fix(browser fetchers): Solving a logic bug in page rotation

- 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)

scrapling/engines/_browsers/_page.py

@@ -6,7 +6,9 @@ from playwright.async_api import Page as AsyncPage
 
 from scrapling.core._types import Optional, List, Literal
 
-PageState = Literal["ready", "busy", "error"]  # States that a page can be in
+PageState = Literal[
+    "finished", "ready", "busy", "error"
+]  # States that a page can be in
 
 
 @dataclass
@@ -23,9 +25,9 @@ class PageInfo:
         self.state = "busy"
         self.url = url
 
-    def mark_ready(self):
-        """Mark the page as ready for new requests"""
-        self.state = "ready"
+    def mark_finished(self):
+        """Mark the page as finished for new requests"""
+        self.state = "finished"
         self.url = ""
 
     def mark_error(self):
@@ -62,24 +64,16 @@ class PagePool:
             self.pages.append(page_info)
             return page_info
 
-    def get_ready_page(self) -> Optional[PageInfo]:
-        """Get a page that's ready for use"""
-        with self._lock:
-            for page_info in self.pages:
-                if page_info.state == "ready":
-                    return page_info
-            return None
-
     @property
     def pages_count(self) -> int:
         """Get the total number of pages"""
         return len(self.pages)
 
     @property
-    def ready_count(self) -> int:
-        """Get the number of ready pages"""
+    def finished_count(self) -> int:
+        """Get the number of finished pages"""
         with self._lock:
-            return sum(1 for p in self.pages if p.state == "ready")
+            return sum(1 for p in self.pages if p.state == "finished")
 
     @property
     def busy_count(self) -> int:
@@ -91,3 +85,33 @@ class PagePool:
         """Remove pages in error state"""
         with self._lock:
             self.pages = [p for p in self.pages if p.state != "error"]
+
+    def close_all_finished_pages(self):
+        """Close all pages in finished state and remove them from the pool"""
+        with self._lock:
+            pages_to_remove = []
+            for page_info in self.pages:
+                if page_info.state == "finished":
+                    try:
+                        page_info.page.close()
+                    except Exception:
+                        pass
+                    pages_to_remove.append(page_info)
+
+            for page_info in pages_to_remove:
+                self.pages.remove(page_info)
+
+    async def aclose_all_finished_pages(self):
+        """Async version: Close all pages in finished state and remove them from the pool"""
+        with self._lock:
+            pages_to_remove = []
+            for page_info in self.pages:
+                if page_info.state == "finished":
+                    try:
+                        await page_info.page.close()
+                    except Exception:
+                        pass
+                    pages_to_remove.append(page_info)
+
+            for page_info in pages_to_remove:
+                self.pages.remove(page_info)