docs: fix filters in meilisearch and algolia guides

[shahednasser]

Summary

What — What changes are introduced in this PR?

• Fix filters applied in the syncing workflows in Meilisearch and Algolia
• Apply filter on product creation and update event to ensure only published products are synced.

Closes #13816

Why — Why are these changes relevant or necessary?

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How — How have these changes been implemented?

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Testing — How have these changes been tested, or how can the reviewer test the feature?

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Examples

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Additional Context

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Note

Updates Algolia and Meilisearch guides to only sync published products and refreshes related docs/prerequisites.

• Integrations Guides (Algolia & Meilisearch)
  • Workflows: Use transform and ProductStatus.PUBLISHED to build product query filters; replace inline { status: "published", ... } with productFilters in useQueryGraphStep.
  • Event Subscribers: Add status: "published" to filters when syncing a single product on product.created/product.updated.
• Docs Updates
  • Caching Module: Add Cloud setup link and a Redis prerequisite; clarify that the module is installed by default and must be enabled/registered.
  • Prerequisites: Tweak Node.js requirement to "v20+ (LTS versions)".
  • Meta: Update edit timestamps for app/integrations/guides/algolia and .../meilisearch.

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[cursor]

Bug: Filters can override published status requirement

The transform callback merges filters in an incorrect order. When ...data.filters is spread after setting status: ProductStatus.PUBLISHED, any incoming filters with a status property will override the required published status. This defeats the PR's goal of ensuring only published products sync. The spread operator should come first so the published status assignment overrides incoming filters.