• Add currentTargetHref to track active scroll target
• Ignore duplicate clicks on same anchor during animation
• Prevent unnecessary animation restarts causing visual stutter

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Related Issues

Closes #22963

Problem

When users rapidly click the same anchor link multiple times, the scroll animation would be canceled and restarted repeatedly, causing visual stuttering and poor user experience.

Root Cause: The current implementation calls clearAnimate() to cancel the previous animation but immediately creates a new animation regardless of whether the target is the same. This causes unnecessary animation restarts when clicking the same link.

Solution

Introduced a currentTargetHref variable to track the target of the currently active scroll animation:

• If a click targets the same anchor as the active animation → Ignore the click
• If a click targets a different anchor → Cancel old animation and start new one
• When animation completes → Reset currentTargetHref to empty string