fix: add max retry limit to _get_page_content to prevent infinite loop

Both _get_page_content and _get_async_page_content use a while-True
loop that retries page.content() on PlaywrightError with no upper
bound. If the page is in a permanently broken state (crashed tab,
closed context), this loops forever and hangs the process.

Replace with a bounded for-loop (default 10 retries = 5s), returning
an empty string if all attempts fail. This preserves the existing
retry behavior for the transient Windows issue (playwright#16108)
while preventing hangs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scrapling/engines/toolbelt/convertor.py

@@ -187,34 +187,34 @@ class ResponseFactory:
         return history
 
     @classmethod
-    def _get_page_content(cls, page: SyncPage) -> str:
+    def _get_page_content(cls, page: SyncPage, max_retries: int = 10) -> str:
         """
         A workaround for the Playwright issue with `page.content()` on Windows. Ref.: https://github.com/microsoft/playwright/issues/16108
         :param page: The page to extract content from.
+        :param max_retries: Maximum number of retry attempts before returning empty string.
         :return:
         """
-        while True:
+        for _ in range(max_retries):
             try:
                 return page.content() or ""
             except PlaywrightError:
                 page.wait_for_timeout(500)
-                continue
-        return ""  # pyright: ignore
+        return ""
 
     @classmethod
-    async def _get_async_page_content(cls, page: AsyncPage) -> str:
+    async def _get_async_page_content(cls, page: AsyncPage, max_retries: int = 10) -> str:
         """
         A workaround for the Playwright issue with `page.content()` on Windows. Ref.: https://github.com/microsoft/playwright/issues/16108
         :param page: The page to extract content from.
+        :param max_retries: Maximum number of retry attempts before returning empty string.
         :return:
         """
-        while True:
+        for _ in range(max_retries):
             try:
                 return (await page.content()) or ""
             except PlaywrightError:
                 await page.wait_for_timeout(500)
-                continue
-        return ""  # pyright: ignore
+        return ""
 
     @classmethod
     async def from_async_playwright_response(