Removing the OpenAPI package version override

[aaronpowell]

Closes #1514

PR Checklist

• Created a feature/dev branch in your fork (vs. submitting directly from a commit on main)
• Based off latest main branch of toolkit
• PR doesn't include merge commits (always rebase on top of our main, if needed)
• New integration
  • Docs are written
  • Added description of major feature to project description for NuGet package (4000 total character limit, so don't push entire description over that)
• Tests for the changes have been added (for bug fixes / features) (if applicable)
• Contains NO breaking changes
• Every new API (including internal ones) has full XML docs
• Code follows all style conventions

Other information

[aaronpowell]

Replaces #1515

[Copilot]

Copilot review overview

🟢 Approval recommended

The changes consistently move OpenAPI versioning to central management and the example updates appear coherent and low-risk.

Review tier: Lite
Findings: None

What changed in this PR

This PR updates the repository’s OpenAPI-related dependencies by removing a local version override in the SurrealDb example and centralizing the Microsoft.AspNetCore.OpenApi version in Directory.Packages.props, while also cleaning up example endpoint metadata usage.

Changes:

• Bumped the centrally-managed Microsoft.AspNetCore.OpenApi package version to 10.0.11 and removed the central Microsoft.OpenApi version entry.
• Removed VersionOverride (and the explicit Microsoft.OpenApi reference) from the SurrealDb example so it follows central package management.
• Removed .WithOpenApi() usage from two example Minimal API endpoints and added launchSettings.json to two example projects.

File	Description
examples/​surrealdb/​CommunityToolkit.Aspire.Hosting.SurrealDb.ApiService/​CommunityToolkit.Aspire.Hosting.SurrealDb.ApiService.csproj	Removes the per-project OpenAPI version override so the sample follows central package versions.
examples/​squad/​CommunityToolkit.Aspire.Hosting.Squad.ApiApp/​Program.cs	Drops .WithOpenApi() on an endpoint (leaving .WithName()), reducing reliance on OpenAPI endpoint metadata extensions.
examples/​java/​CommunityToolkit.Aspire.Hosting.Java.ApiApp/​Program.cs	Drops .WithOpenApi() on the weather endpoint (leaving .WithName()).
Directory.Packages.props	Centralizes the Microsoft.AspNetCore.OpenApi version bump and removes the central pin for Microsoft.OpenApi.
examples/​redpanda/​CommunityToolkit.Aspire.Hosting.RedPanda.Consumer/​Properties/​launchSettings.json	Adds launch profile settings for local dev/debug.
examples/​posta/​CommunityToolkit.Aspire.Hosting.Posta.ApiService/​Properties/​launchSettings.json	Adds launch profile settings for local dev/debug.

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[Odonno]

LGTM