chore: some match case

[asukaminato0721]

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Summary

Screenshots

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Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran make lint && make type-check (backend) and cd web && pnpm exec vp staged (frontend) to appease the lint gods

[github-actions]

Pyrefly Type Coverage

Metric	Base	PR	Delta
Type coverage	0.00%	43.66%	+43.66%
Strict coverage	0.00%	43.19%	+43.19%
Typed symbols	0	22,040	+22,040
Untyped symbols	0	28,749	+28,749
Modules	0	2551	+2,551

[Copilot]

Pull request overview

This PR refactors conditional branching in the backend to use Python match/case for improved readability and structured dispatch in two areas: website extractor selection and advanced prompt rendering.

Changes:

• Replaced if/elif/else chains with match/case for website provider selection in the RAG extraction processor.
• Replaced if/elif/else chains with match/case for prompt edition_type and message role handling in advanced prompt transformation.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
api/core/rag/extractor/extract_processor.py	Refactors website provider dispatch to a match/case statement while keeping extraction behavior the same.
api/core/prompt/advanced_prompt_transform.py	Refactors prompt edition/role branching to match/case; introduces a potential behavior change around falsy edition_type values.

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