chore(runtime-vapor): refactor createKeyedFragment for improved insertion handling

[edison1105]

No description provided.

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch edison/feat/hydrateKeyedFragment

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
compiler-dom.global.prod.js	84.5 kB	30 kB	26.4 kB
runtime-dom.global.prod.js	105 kB	39.6 kB	35.6 kB
vue.global.prod.js	163 kB	59.7 kB	53.2 kB

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	47.4 kB	18.5 kB	17 kB
createApp	56.3 kB	21.7 kB	19.8 kB
createApp + vaporInteropPlugin	88.4 kB	33.1 kB	30 kB
createVaporApp	32.4 kB	12.4 kB	11.3 kB
createSSRApp	60.6 kB	23.4 kB	21.4 kB
defineCustomElement	61.3 kB	23.2 kB	21.2 kB
overall	71.2 kB	27 kB	24.6 kB