Fix: Handle Missing Page Titles

[Sachin-NK]

This commit fixes these issues by:

Using .get('') to safely retrieve the page title, providing a default empty string if the element is missing.

Using .strip() to remove leading/trailing whitespace from the extracted title.

Using page_title or None to explicitly set the title to None if it's missing or empty after stripping whitespace.

[CLAassistant]

All committers have signed the CLA.