revert(virtual-core): "notify framework when count changes"

[piecyk]

🎯 Changes

This reverts the infinite re-rendering issue introduced in #1085

The fix was unnecessary - getMeasurements() already invalidates on count changes via getMeasurementOptions() dependency. Test confirms getTotalSize() returns fresh values without manual notifications.

fixes #1092

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested this code locally with pnpm run test:pr.

🚀 Release Impact

• This change affects published code, and I have generated a changeset.
• This change is docs/CI/dev-only (no release).

[changeset-bot]

🦋 Changeset detected

Latest commit: baa7baf

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 7 packages

Name	Type
@tanstack/virtual-core	Patch
@tanstack/angular-virtual	Patch
@tanstack/lit-virtual	Patch
@tanstack/react-virtual	Patch
@tanstack/solid-virtual	Patch
@tanstack/svelte-virtual	Patch
@tanstack/vue-virtual	Patch

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---

☁️ Nx Cloud last updated this comment at 2026-01-07 20:52:16 UTC

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commit: baa7baf