improve batch rendering performance by moving VM blocks out of the DESTRYABLE_META

[NullVoxPopuli]

It's apparently faster to access a property on an object and do some checks, than it is to always ask a (weak)map for stuff

No downside.

@runspired knew about this perf optimization long ago: https://discord.com/channels/480462759797063690/1539315791088848936/1539319539295199242

so.. I'll be exploring where else we can do it in future PRs

This was explored with AI over here: #21569

[github-actions]

📊 Size report

Tarball size — 1.2 MB → 1.2 MB

dist/dev   0.1%↑

File	Before (Size / Brotli)	After (Size / Brotli)
./packages/@glimmer/destroyable/index.js	6.4 kB / 1.5 kB	16%↑7.5 kB / 15%↑1.7 kB
./packages/shared-chunks/api-{hash}.js	26.2 kB / 5.8 kB	0.4%↑26.3 kB / 0.7%↑5.9 kB
./packages/shared-chunks/destroyable-key-BsfVBM7f.js	—	524 B / 265 B
./packages/shared-chunks/reference-{hash}.js	4.9 kB / 1.3 kB	2%↑5 kB / 3%↑1.3 kB
./packages/shared-chunks/render-{hash}.js	55.8 kB / 12.1 kB	0.6%↑56.1 kB / 1%↑12.2 kB
Total (Includes all files)	2.1 MB / 491.8 kB	0.1%↑2.1 MB / 0.2%↑492.6 kB

---

dist/prod   0.1%↑

File	Before (Size / Brotli)	After (Size / Brotli)
./packages/@glimmer/destroyable/index.js	4 kB / 898 B	23%↑4.9 kB / 23%↑1.1 kB
./packages/shared-chunks/api-{hash}.js	25.7 kB / 5.7 kB	0.4%↑25.8 kB / 0.9%↑5.8 kB
./packages/shared-chunks/destroyable-key-BsfVBM7f.js	—	524 B / 265 B
./packages/shared-chunks/reference-{hash}.js	4.3 kB / 1.2 kB	2%↑4.4 kB / 3%↑1.2 kB
./packages/shared-chunks/render-{hash}.js	52 kB / 11.2 kB	0.7%↑52.4 kB / 1%↑11.3 kB
Total (Includes all files)	1.9 MB / 449.2 kB	0.1%↑1.9 MB / 0.2%↑450 kB

---

smoke-tests/v2-app-template/dist   0.1%↑

File	Before (Size / Brotli)	After (Size / Brotli)
./assets/api-{hash}.js	290.2 kB / 78 kB	0.1%↑290.6 kB / 0.08%↑78 kB
Total (Includes all files)	342.5 kB / 95 kB	0.1%↑342.9 kB / 0.1%↑95.1 kB

---

smoke-tests/v2-app-hello-world-template/dist   0.2%↑

File	Before (Size / Brotli)	After (Size / Brotli)
./assets/main-{hash}.js	132.1 kB / 36.9 kB	0.2%↑132.4 kB / 0.3%↑37 kB
Total (Includes all files)	132.4 kB / 37 kB	0.2%↑132.7 kB / 0.3%↑37.1 kB

_{🤖 This report was automatically generated by wyvox/pkg-size}

[NullVoxPopuli]

Results on a mac: