chore: migrate defaultProps to default assignment

[chris-schneider-zen]

Description

As of React v19 defaultProps is fully deprecated. Currently in React v18 it does warn against this being removed, so we can easily migrate these within the codebase.

This PR does the work of eliminating and replace defaultProps with one of two patterns:
a. default parameter values (with destructuring)
b. nullish coalescing within styled::attrs() callbacks

Details

@@ -21,9 +21,9 @@ const AccordionComponent = forwardRef<HTMLDivElement, IAccordionProps>(
       children,
       isBare,
       isCompact,
-      isAnimated,
+      isAnimated = true,
       isExpandable,
-      isCollapsible,
+      isCollapsible = true,
       level,
       onChange,
       defaultExpandedSections,
@@ -103,11 +103,6 @@ const AccordionComponent = forwardRef<HTMLDivElement, IAccordionProps>(
 
 AccordionComponent.displayName = 'Accordion';
 
-AccordionComponent.defaultProps = {
-  isAnimated: true,
-  isCollapsible: true
-};
-

Checklist

• 👌 design updates will be Garden Designer approved (add the designer as a reviewer)
• 🌐 demo is up-to-date (npm start)
• ⬅️ renders as expected with reversed (RTL) direction
• ⚫ renders as expected in dark mode
• 🤘 renders as expected with Bedrock CSS (?bedrock)
• 💂‍♂️ includes new unit tests. Maintain existing coverage (always >= 96%)
• ♿ tested for WCAG 2.1 AA accessibility compliance
• 📝 tested in Chrome, Firefox, Safari, and Edge