[dajiaohuang]

Summary

• Refetch the DevTools client query when the store-reset event completes, so a same-document History API navigation cannot leave the panel at zero registered clients.
• Add a synthetic pageNavigated regression test and a patch changeset.

Closes #1901.

Validation

• npm test -- --runInBand src/application/__tests__/App.test.tsx — 2 passed. The test run emitted a non-fatal React act(...) warning during the synthetic Apollo cache update.
• npm run type-check — passed.
• ESLint (ESLINT_USE_FLAT_CONFIG=true with the local Windows ESLint executable) — passed.
• Prettier check for changed files — passed.

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[apollo-cla]

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