refactor: remove validation from converter

[DennisGarding]

Remove all checks, which results in an empty Convert Result. These should be catches by the later entity validation

[Copilot]

Pull Request Overview

This PR refactors the Shopware migration assistant to handle edge cases more gracefully by moving validation logic from converters to writers and making the conversion process more permissive. The key changes include:

• Removing early returns from converters when optional data is missing, allowing partial conversions to proceed
• Adding filtering logic to writers to prevent overwriting locked/system-default data
• Replacing $this->getContainer() with static::getContainer() throughout test files for consistency
• Updating fixture outputs to reflect new conversion behavior for previously rejected edge cases

Reviewed Changes

Copilot reviewed 119 out of 119 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/Profile/Shopware6/Writer/ProductSortingWriter.php	Adds constructor and writeData method to filter out locked product sortings before writing
src/Profile/Shopware6/Writer/CmsPageWriter.php	Adds writeData method to filter out locked CMS pages before writing
src/Profile/Shopware6/Converter/TaxRuleConverter.php	Refactors to continue conversion even when optional associations are missing
src/Profile/Shopware6/Converter/SeoUrlConverter.php	Removes early return for unmodified SEO URLs, makes foreignKey conversion conditional
src/Profile/Shopware6/Converter/ProductSortingConverter.php	Removes locked product sorting check from converter (moved to writer)
src/Profile/Shopware6/Converter/NumberRangeConverter.php	Makes type lookup non-blocking, allows conversion without valid type
src/Profile/Shopware6/Converter/MediaFolderConverter.php	Restructures logic to handle edge case for digital products media folder
src/Profile/Shopware6/Converter/MailTemplateConverter.php	Makes mail template type lookup non-blocking
src/Profile/Shopware6/Converter/DocumentConverter.php	Makes document type lookup non-blocking
src/Profile/Shopware6/Converter/DocumentBaseConfigConverter.php	Makes document type lookup non-blocking
src/Profile/Shopware6/Converter/CustomerWishlistConverter.php	Removes customer and sales channel validation from converter
src/Profile/Shopware6/Converter/CmsPageConverter.php	Removes locked CMS page handling from converter (moved to writer)
src/Profile/Shopware6/Converter/CategoryCmsPageAssociationConverter.php	Makes CMS page mapping lookup non-blocking
src/Profile/Shopware/Converter/*	Multiple converters refactored to remove strict validation and allow partial conversions
src/Migration/Writer/SeoUrlWriter.php	Filters out modified SEO URLs before writing
src/Migration/Writer/LanguageWriter.php	Adds constructor and writeData to filter existing languages
tests/**/*	Updates getContainer() to static::getContainer() and adjusts test expectations
tests/_fixtures/**/*	Updates test fixtures to reflect new conversion behavior
src/DependencyInjection/*.xml	Adds required service dependencies for new writer logic

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[MalteJanz]

Please add a short PR description 🙂 . E.g. questions I would like to see answered in it:

• What type of checks are being removed, e.g. checks for entity fields that are required in SW6 and would produce another log entry otherwise in the later entity validation
• What other type of checks are removed and what's the reasoning behind it. E.g. does the user still get notified about errors in optional fields? Or are they just silently set to null?

[ennasus4sun]

nice 💪🏻

[MalteJanz]

Still have to look further (didn't had the time yet for a full review) 🙈 .

And guys, please review and test this very carefully. Because we can easily introduce new bugs here, especially as our acceptance tests aren't running right now in the feature branch

SwagMigrationAssistant/tests/acceptance/tests/MigrationByUiFlow.spec.ts

Lines 17 to 19 in 6c36b6d

	// TODO: fix & update snapshots
	// eslint-disable-next-line playwright/no-skipped-test
	test.skip();

[MalteJanz]

After my open comments are solved: LGTM, nice job, this was quite a task 💪