fix: Improve login error handling (develop)

The login error handling was improved to exit when an error
is encountered, even if the error message is empty.  The
user agent string is now dynamically generated using the
browser version.

Signed-off-by: Jason Cameron <git@jasoncameron.dev>

video_creation/screenshot_downloader.py

@@ -85,7 +85,7 @@ def get_screenshots_of_reddit_posts(reddit_object: dict, screenshot_num: int):
             color_scheme="dark",
             viewport=ViewportSize(width=W, height=H),
             device_scale_factor=dsf,
-            user_agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36",
+            user_agent=f"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/{browser.version}.0.0.0 Safari/537.36",
             extra_http_headers={
                 "Dnt": "1",
                 "Sec-Ch-Ua": '"Not A(Brand";v="8", "Chromium";v="132", "Google Chrome";v="132"',
@@ -110,17 +110,12 @@ def get_screenshots_of_reddit_posts(reddit_object: dict, screenshot_num: int):
 
         login_error_div = page.locator(".AnimatedForm__errorMessage").first
         if login_error_div.is_visible():
-            login_error_message = login_error_div.inner_text()
-            if login_error_message.strip() == "":
-                # The div element is empty, no error
-                pass
-            else:
-                # The div contains an error message
-                print_substep(
-                    "Your reddit credentials are incorrect! Please modify them accordingly in the config.toml file.",
-                    style="red",
-                )
-                exit()
+
+            print_substep(
+                "Your reddit credentials are incorrect! Please modify them accordingly in the config.toml file.",
+                style="red",
+            )
+            exit()
         else:
             pass