fix: stop slider transitions from resetting animations - #488

Summary

A slider advancing to the next slide could reset unrelated GSAP animations on the page — for example, closing an open navigation menu. This fixes that interference so animations keep their state while a slider transitions.

Changes

• Ignore childList mutations that originate inside a slider ([data-slider-id] / .swiper-wrapper) in the animation remount observer
• Swiper moves/reshuffles real slide nodes on loop and transition; those moves were mistaken for newly mounted content, triggering a full animation rebind that re-applied every interaction's initial state
• Genuine dynamically-injected content (filter / load-more) is unaffected — it flows through the separate ITEMS_INJECTED_EVENT path, which still triggers rebinds as before

Test plan

• Add a slider (loop enabled) and a separate element with a click-toggle animation (e.g. a nav menu that opens on click)
• Open the toggle, then let the slider advance / click next — the toggle stays open
• Confirm load / scroll-into-view / hover animations on other elements still play normally
• Toggle a filter or load-more on a collection and confirm injected items still animate (rebind still works)