perf(session): improve page management and speed up execution

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.

scrapling/engines/_browsers/_controllers.py

@@ -305,8 +305,9 @@ class DynamicSession(DynamicSessionMixin, SyncSession):
                 page_info.page, first_response, final_response, params.selector_config
             )
 
-            # Mark the page as finished for next use
-            page_info.mark_finished()
+            # Close the page, to free up resources
+            page_info.page.close()
+            self.page_pool.pages.remove(page_info)
 
             return response
 
@@ -554,9 +555,9 @@ class AsyncDynamicSession(DynamicSessionMixin, AsyncSession):
                 page_info.page, first_response, final_response, params.selector_config
             )
 
-            # Mark the page as finished for next use
-            page_info.mark_finished()
-
+            # Close the page, to free up resources
+            await page_info.page.close()
+            self.page_pool.pages.remove(page_info)
             return response
 
         except Exception as e:  # pragma: no cover