fix(spec): word the limit prescription for both faces of the timeline block

`TimelineConfigSchema` is also the nested `timeline` block of an
`object-timeline` node, where the row bound is the node's flat `limit`,
not `pagination.pageSize`. The prescription now names both.

Claude-Session: https://claude.ai/code/session_01Sfe5YjBLwB9J3y8fvm2xq1
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/spec/src/ui/view.zod.ts

@@ -1137,10 +1137,10 @@ export const GroupingConfigSchema = lazySchema(() => strictObject({
   + 'AND-ed into the view filter. Compiled by `compileListViewGroupQuery` / `compileListViewGroupRowsQuery`',
 ));
 
-/** A view's row bound is `pagination.pageSize`; the per-kind blocks answer `limit` with this. */
+/** The per-kind blocks answer `limit` with this; `timeline` is also nested on `object-timeline`. */
 const VIEW_ROW_BOUND_GUIDANCE =
-  'A view\'s row bound is `pagination.pageSize` on the view; this block declares no `limit`. '
-  + 'Delete the key and set `pagination.pageSize` instead.';
+  'This block declares no `limit`. Delete the key: the row bound is `pagination.pageSize` on a view, '
+  + 'or the flat `limit` on a page component node.';
 
 /**
  * Gallery View Configuration (Airtable-style)