Add client fixes for fully static route errors (#99659)
## Summary
- add a Client fix to both runtime-data and uncached-data errors on
fully static routes
- document client URL hooks, browser APIs such as non-`HttpOnly`
cookies, and client-side fetching as distinct patterns
- keep the combined runtime-or-uncached classification in the blocking
build message instead of adding a third overlay card variant
- omit the Cache card when a fully static error points to
`connection()`, matching the existing blocking-route behavior
- align build guidance, overlay cards, error pages, and tests
## Design and capture review
- [Runtime
data](https://error-messages-overhaul-ibsl.labs.vercel.dev/scenario/125-ensure-static-cookies)
- [Uncached
data](https://error-messages-overhaul-ibsl.labs.vercel.dev/scenario/128-ensure-static-uncached)
-
[`connection()`](https://error-messages-overhaul-ibsl.labs.vercel.dev/scenario/129-ensure-static-connection)
## Verification
- `pnpm exec jest --runInBand
packages/next/src/next-devtools/dev-overlay/components/instant/instant-guidance-data.test.ts
packages/next/src/next-devtools/dev-overlay/container/errors.test.ts`
(139 tests passed)
- Prettier and ESLint passed for the changed files
- Focused e2e snapshots left to CI
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