chore: add BlocksTab.tsx to filesize allowlist

Pre-existing oversize (583 lines) — not introduced by this PR.

Author: miguel-heygen

.filesize-allowlist

@@ -11,3 +11,4 @@ packages/studio/src/player/components/Timeline.tsx
 packages/studio/src/player/components/timelineEditing.test.ts
 packages/studio/src/components/editor/domEditing.test.ts
 packages/studio/src/components/editor/domEditingLayers.ts
+packages/studio/src/components/sidebar/BlocksTab.tsx