Show the graph in the e2e 6 screenshot of the long name (#306)

The check for the long animation name ran after a play and stop, which
leave the editor on the scene tab. Its screenshot showed the scene, not
the node. The check itself read the row through the test hook and was
not affected.

- The step switches back to the graph tab before it renames the
  animation.

Tests:
- e2e 6: all passed, 149 checks. The screenshot shows the node, with
  "animation Swi…" ending before a whole "progress".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tools/e2e/06-graph.mjs

@@ -1863,6 +1863,7 @@ export async function graph(t) {
       JSON.stringify(logged),
     );
     // #306: a long animation name gives way before the output label of its row.
+    await showTab('graph');
     await mutate(
       `__gm.state.project.assets.find((a) => a.id === 'ap-swing').name = 'Swing with a name far too long for its row'`,
     );