Add Microsoft.EntityFrameworkCore.Tools package guidance to EF Core migrations documentation

[Copilot]

Added guidance about the potential need for the Microsoft.EntityFrameworkCore.Tools package in EF Core migration services to prevent silent migration failures.

Changes Made

• Added a TIP callout in docs/database/ef-core-migrations.md after the NuGet package installation step
• The guidance explains that the Microsoft.EntityFrameworkCore.Tools package might be needed to prevent EF from failing silently without applying migrations
• Specifically mentions this is particularly relevant when using databases other than SQL Server, such as PostgreSQL
• Includes a reference to the specific EF Core GitHub issue for additional context

Context

Users reported that EF migrations can fail silently without the Tools package, especially when using PostgreSQL instead of SQL Server. This minimal documentation update helps developers avoid this pitfall by providing proactive guidance during the migration service setup process.

The change follows the existing documentation patterns and Microsoft Writing Style Guide conventions.

Fixes #3678.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

---

Internal previews

📄 File	🔗 Preview link
docs/database/ef-core-migrations.md	docs/database/ef-core-migrations