[6.x] Don't use motion-vue for bard/replicator set animations

[duncanmcclean]

This pull request removes the Motion component from Bard/Replicator sets to improve performance. Part of addressing #13385.

Fixes #13958

Before

CleanShot.2026-02-17.at.15.02.39.mp4

After

CleanShot.2026-02-17.at.14.59.22.mp4

[jasonvarga]

Wouldnt the clip issue be on bard sets too?

[duncanmcclean]

Actually, in chatting with Claude, I'm not sure we even need overflow-clip on replicator sets anymore.

overflow-clip was conditionally applied during Motion's height animation and removed after completion. Now that we're using v-show, there's no animation to clip during.

[Brewd3v]

I was experimenting with our project this morning and found the same. Replacing motion with a v-show div made it so much faster. Night and day.