Make AND/OR logic more visible and clearly clickable in custom event property conditions within Audience rules

Improve the visual design of the AND/OR operator within custom event property conditions in audience rules, so users can easily recognize that it is interactive and can be toggled.

Current Behavior
When adding properties under a custom event in an audience rule, the AND/OR operator between conditions is displayed in a way that looks like static text. Users often don’t realize it can be clicked to switch between AND and OR. As a result, rules are frequently built with the wrong logic, or users spend time searching for a way to change it.