[azure.ai.agents] Registry update for 1.0.0-beta.4

[azure-sdk]

Registry update for the azd-ext-azure-ai-agents_1.0.0-beta.4 release.

[Copilot]

Pull request overview

This PR registers the azure.ai.agents extension release 1.0.0-beta.4 in azd's extension registry so users can install it via azd extension install. It adds the version entry (artifacts, checksums, capabilities, providers, dependencies) to registry.json, and updates the TestFigSpec.ts golden snapshot, which regenerates automatically because the fig-spec test installs the newly registered beta.4 binary and reflects its updated azd ai agent sample list --type help text.

Changes:

• Add the 1.0.0-beta.4 version entry for azure.ai.agents to the extension registry, with per-platform artifact URLs and SHA-256 checksums (all verified against the actual release assets).
• Update the --type flag description in the Fig completion snapshot to include the new azure.yaml template type.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
cli/azd/extensions/registry.json	Adds the 1.0.0-beta.4 registry entry; metadata matches extension.yaml and checksums match the published release assets.
cli/azd/cmd/testdata/TestFigSpec.ts	Regenerated snapshot reflecting the beta.4 binary's expanded --type supported values (agent, azd, azure.yaml).

[jongio]

Registry entry for 1.0.0-beta.4 is well-formed. Verified the release tag exists with all 6 platform artifacts. Checksums present, URLs valid, format consistent with prior entries. TestFigSpec.ts snapshot update is correct.