fix: apply initial scale on KeepScale mount

[y-solb]

Summary

This PR fixes an issue where the KeepScale component did not apply the initialScale when first mounted. The scale transform was only being updated on change events, causing the element to appear unscaled initially.

Changes

• Apply applyScale once on mount using instance.transformState.scale

Context

Previously, the scale was only applied after a transformState change, which meant the element rendered with an incorrect scale until the user interacted or zoomed.

Impact

• Ensures the correct visual scaling from the initial render

2025-04-24.11.29.11.mov

Thanks!