• Make sure you've installed the latest version using instructions

Output from azd version
Run azd version and copy and paste the output here:
azd version 1.24.0 (commit 9131d8c) (stable)

Describe the bug
asks for agent service twice on invoke

To Reproduce

• Create and deploy azd agent project (azd ai agent init, azd up) with multiple services defined
• run "azd ai agent invoke hello"

Expected behavior
asks for agent service once on invoke

Environment
Information on your environment:
* Language name and version
* IDE and version : [e.g. Visual Studio 16.3]

Additional context
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