[REGRESSION] BusyIndicator Rotates Too Fast with Fusion Style

When the application uses the Fusion style, the BusyIndicator rotates excessively fast. The issue appears to be related to the RotationAnimator's duration property. Increasing the duration (e.g., from 1000 to 10000) slows down the animation, but the rotation speed still does not match the expected duration (e.g., it does not take 10 seconds to complete one rotation when set to 10000).

Steps to Reproduce:

• Ensure the Fusion style is active from settings.
• Run the gallery example application.

• Navigate to the BusyIndicator page.

Expected Behavior:
The BusyIndicator should complete one full rotation per second

Actual Behavior:
The BusyIndicator rotates too fast, not respecting the specified duration.

Possible Cause/Suggestion:
It seems this issue is a regression since the example works fine in 6.10. It likely stems from how the RotationAnimator's duration property is handled.