Adding Release 3.3.4 changes

[cklosowski]

Changelog

• NEW! Stripe: When connecting EDD to Stripe, the necessary webhooks are registered.
• Cart: Enhanced cookie handling when emptying and re-adding items to cart.
• Checkout: Resolved undefined variable issue when using block registration form.
• Downloads: Improved response header handling to prevent invalid content-length headers.
• Downloads: Resolved inconsistency in author availability for new vs existing downloads.
• Emails: Improved email tag loading for more efficient processing.
• Emails: Removed image insertion capability from password reset email editor.
• Emails: Corrected filter name in new user email for proper functionality.
• Emails: Fixed a fatal error in password reset due to missing parameters.
• Emails: Fixed empty {password_link} email tag for first-time users.
• File System: Consolidate filesystem interactions by normalizing file paths.
• Orders: Improve order total calculations for orders with multiple adjustments.
• Orders: Fixed an issue with resumed orders and date_created values.
• Orders: Deleting an order now deletes the related transactions entry.
• Orders: Implemented safeguard to prevent negative order totals.
• Reports: Fixed PHP notices occurring in certain time zones.
• Sessions: Added new filters for more flexible cookie management.
• Sessions: Added built-in support for Pantheon cookie exclusions.
• Sessions: Added built-in support for WP Engine cookie exclusions.
• Stripe: Improve legacy card elements session compatibility.
• Users: Added a tool to help fix corrupted capabilities that prevent access to EDD settings screens.

Issues Addressed in this Release

#9757 - miss $user_login and $user_data for retrieve_password_title filter
#9752 - Emails: Fix wrong filter name in new_user email