Refactor: Viewport Culling improvements (#5767)

## Summary

Reduce the number of DOM changes, but also restructure the logic to
create a clean point of separation for when we can make DragAndScale
reactive.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5767-Refactor-Viewport-Culling-improvements-2796d73d365081708f02cb8033aac9b1)
by [Unito](https://www.unito.io)

package.json

@@ -18,10 +18,11 @@
     "format:check": "prettier --check './**/*.{js,ts,tsx,vue,mts}' --cache",
     "format:no-cache": "prettier --write './**/*.{js,ts,tsx,vue,mts}' --list-different",
     "format:check:no-cache": "prettier --check './**/*.{js,ts,tsx,vue,mts}'",
+    "test:all": "nx run test",
     "test:browser": "npx nx e2e",
-    "test:unit": "nx run test tests-ui/tests",
     "test:component": "nx run test src/components/",
     "test:litegraph": "vitest run --config vitest.litegraph.config.ts",
+    "test:unit": "nx run test tests-ui/tests",
     "preinstall": "npx only-allow pnpm",
     "prepare": "husky || true && git config blame.ignoreRevsFile .git-blame-ignore-revs || true",
     "preview": "nx preview",