Document GraphQL operation limits startup warning and recommended security profile

[pwizla]

This PR updates documentation based on strapi/strapi#27390.

Adds an "Operation limits and security" section to the GraphQL API page (cms/api/graphql.md) documenting:

• The startup warning Strapi now emits before Apollo starts when depthLimit is not set or maxLimit is unlimited (-1)
• That custom Apollo validation rules are independent and not reflected in the warning
• The recommended configuration profile (defaultLimit: 25, maxLimit: 100, depthLimit: 10) with JS and TypeScript examples
• A cross-link to the full GraphQL plugin configuration reference

Generated automatically by the docs self-healing workflow.
Review before merging.

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Project	Deployment	Actions	Updated (UTC)
documentation	Ready	Preview	Aug 21, 2026 2:09am

[pwizla]

@Bassel17 Does it make sense to add this to public docs?