Document ExcludeForeignKeyFromMigrations (EF Core 11)

[Copilot]

• Add documentation section "Excluding foreign key constraints from migrations" in foreign-and-principal-keys.md
• Add section in whatsnew.md for EF Core 11 under the Migrations section (moved to first position)

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[Copilot]

Pull request overview

Adds documentation for EF Core 11’s ability to model relationships without generating DB foreign key constraints via migrations.

Changes:

• Documented ExcludeForeignKeyFromMigrations() in the EF Core 11 “What’s New” Migrations section.
• Added a new Relationships docs section explaining how to exclude FK constraints (including a global application example).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
entity-framework/core/what-is-new/ef-core-11.0/whatsnew.md	Adds an EF Core 11 Migrations note describing how to exclude FK constraints from migrations and links to detailed docs.
entity-framework/core/modeling/relationships/foreign-and-principal-keys.md	Adds detailed guidance and examples for excluding FK constraints from migrations (and related behaviors).

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