refactor(plugin-grid): move ObjectGrid's row load into a sibling hook (slice 5)

The invalidation nonce, the async load effect, the host findParams
reset and the page-1 reset move verbatim into useObjectGridRowLoad,
called where the block stood, so hook order is unchanged.
toOrderByClause moves with its only caller. gridArrayArmOrderby-8973
reads ObjectGrid.tsx and the new module joined, since its $orderby pin
moved while parseSchemaSort stays.

Co-authored-by: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bdrd2yH4eqnz2QobtN3haE

Author: claude

.changeset/25994-objectgrid-row-load-hook.md

@@ -0,0 +1,12 @@
+---
+'@object-ui/plugin-grid': patch
+---
+
+refactor(plugin-grid): `ObjectGrid`'s row load moves into a sibling hook
+
+Clause-②: no
+Metadata-protocol: none
+
+The row load of the `ObjectGrid` component moves verbatim out of `ObjectGrid.tsx` into `useObjectGridRowLoad` (`objectGridRowLoad.ts`): the data-invalidation nonce, the one async load effect, the host `findParams` reset of "select all matching" and the page-1 reset on a query change. `toOrderByClause`, whose only caller is the load effect, moves with it. `ObjectGrid` calls the hook where the block stood, so its hook order, its queries and its rendered output do not change. No name is renamed, and the package entry is unchanged.
+
+What to do: nothing.