Gravity Forms 2.8.9

- Fixed jQuery deprecation notices in the form preview for the following fields: email, product, total, and stripe fields, as well as some conditional logic.
- Fixed "undefined index" errors that sometimes appear when a form is embedded with a shortcode. Credit: The GravityKit team.
- AF: Updated the background processor to include additional logging statements around batch processing.

- Added a new global setting to select the default form theme. On new sites, "Orbital" will be the default theme.
- Added a 'theme' parameter to the Gravity Forms shortcode.
- Added a new [`gform_default_styles`](https://docs.gravityforms.com/gform_default_styles/) filter to apply the same styles to all forms on a site.
- Fixed an issue where the setup wizard saves an empty license key if the user clicks the "Skip" button.
- Fixed an issue that causes fatal errors on some sites during the background processing of telemetry data.
- Fixed an issue where feed settings for ActiveCampaign, Agile CRM, Breeze, Mailchimp, Trello, Twilio, and ZohoCRM display a deprecation warning when using PHP 8.1.
- Updated the appearance of the template library.
- Updated the name of "Gravity" theme to "Gravity Forms 2.5 Theme."

- Fixed an issue that causes fatal errors on some sites during the background processing of telemetry data.