Add Visual Indicators for Settings Modified from Default Values (Widget Diff / Changed Fields Highlighting)

Describe the Problem When editing widgets in Elementor, there is currently no reliable or centralized way to quickly identify which individual controls have been modified from their default values. Many widgets contain dozens of settings across Content, Style, and Advanced tabs. When inheriting a site, revisiting older builds, debugging layout issues, or auditing for consistency, users must manually scan every control and section to discover whether a value has been changed. This is time-consuming and error-prone. While some controls show a small reset icon, there is no global or grouped visibility into: • Which sections contain customized values • Which specific fields differ from defaults • Whether a widget has any changes at all without opening every panel This creates friction for developers, designers, and site maintainers and significantly slows down troubleshooting and optimization workflows. Propose a Solution Add a built-in “changed from defau…