do not open the url, if browser already in it

Sometimes LLMs can make mistake and ask for open_url when already in the page.
This can sometimes lead to reseting the page state (e.g. if certain text was already entered in the text fields, they get lost).
This change prevents this from happening

ae/core/skills/open_url.py

@@ -25,11 +25,18 @@ async def openurl(url: Annotated[str, "The URL to navigate to. Value must includ
     browser_manager = PlaywrightManager(browser_type='chromium', headless=False)
     await browser_manager.get_browser_context()
     page = await browser_manager.get_current_page()
-    # Navigate to the URL with a short timeout to ensure the initial load starts
-    function_name = inspect.currentframe().f_code.co_name # type: ignore
     try:
-        await browser_manager.take_screenshots(f"{function_name}_start", page)
         url = ensure_protocol(url)
+        if page.url == url:
+            logger.info(f"Current page URL is the same as the new URL: {url}. No need to refresh.")
+            title = await page.title()
+            return f"Page already loaded: {url}, Title: {title}" # type: ignore
+
+        # Navigate to the URL with a short timeout to ensure the initial load starts
+        function_name = inspect.currentframe().f_code.co_name # type: ignore
+
+        await browser_manager.take_screenshots(f"{function_name}_start", page)
+
         await page.goto(url, timeout=timeout*1000) # type: ignore
     except PlaywrightTimeoutError as pte:
         logger.warn(f"Initial navigation to {url} failed: {pte}. Will try to continue anyway.") # happens more often than not, but does not seem to be a problem