fix: run all merged buildEnd hooks

[ScriptedAlchemy]

Follow-up to the unresolved review on #108.

• run every merged buildEnd hook in deterministic order
• preserve and rethrow the first normalized failure after remaining hooks finish
• add a regression test using a real normalized Rsbuild config
• include a patch changeset

Local verification:

• pnpm exec rstest run tests/react-router-config.test.ts
• pnpm typecheck
• pnpm test:core (640 passed)
• pnpm format:check
• pnpm build

[ScriptedAlchemy]

@codex review

[pkg-pr-new]

Open in StackBlitz

pnpm add https://pkg.pr.new/rsbuild-plugin-react-router@16f5987

commit: 16f5987

[github-actions]

Benchmark results

Case	Base	Head	Delta
build-256-ssr	2016.6 ms	2064.6 ms	+2.4%
dev-48-ssr	860.1 ms	849.5 ms	-1.2%

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Chef's kiss.

Reviewed commit: a12e28014b

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[codspeed-hq]

Merging this PR will not alter performance

✅ 1 untouched benchmark
⏩ 2 skipped benchmarks¹

---

_{Comparing codex/run-all-build-end-hooks (16f5987) with main (ae222a3)}

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩