Update yaml objects to match maml changes.

[trangevi]

Update other files to adapt to changes.

[JeffreyCA]

learn-french-agent/agent.yaml

I encountered a panic during the deployment phase of azd up:

Deploying services (azd deploy)

  |===    | Deploying service Learn French Agentexit code: 2, stdout: Using agent definition: /workspaces/agent-french/src/Learn French Agent/agent.yaml
, stderr: Project path: /workspaces/agent-french, Service path: /workspaces/agent-french/src/Learn French Agent
Deploying Prompt Agent
======================
Loaded configuration from: /workspaces/agent-french/src/Learn French Agent/agent.yaml
Using endpoint: https://<redacted>.services.ai.azure.com/api/projects/jc-french
Agent Name: Learn French Agent
panic: interface conversion: interface {} is agent_yaml.PromptAgent, not agent_yaml.AgentDefinition

goroutine 28 [running]:
azureaiagent/internal/pkg/agents/agent_yaml.CreateAgentAPIRequestFromManifest({{0xc000112d08, 0x12}, {0x0, 0x0}, 0xc0002c7eb0, 0xc0002ac458, {0xf6ba60, 0xc0004d04d0}, 0xc0002ac460}, {0x0, ...})
        /workspaces/azure-dev/cli/azd/extensions/azure.foundry.ai.agents/internal/pkg/agents/agent_yaml/map.go:108 +0x355
azureaiagent/internal/project.(*AgentServiceTargetProvider).deployPromptAgent(0xc000034920, {0x1396678, 0xc000296030}, 0xc0004dc1c0, 0xc0005e0190, 0xc000055cb0)
        /workspaces/azure-dev/cli/azd/extensions/azure.foundry.ai.agents/internal/project/service_target_agent.go:389 +0x4c5
azureaiagent/internal/project.(*AgentServiceTargetProvider).Deploy(0xc000034920, {0x1396678, 0xc000296030}, 0xc000150d80?, 0xc0005566e0, 0xc000308620?, 0xc0004c6bb8)
        /workspaces/azure-dev/cli/azd/extensions/azure.foundry.ai.agents/internal/project/service_target_agent.go:299 +0xa38
github.com/azure/azure-dev/cli/azd/pkg/azdext.(*ServiceTargetManager).buildServiceTargetResponseMsg(0xc0003bc720, {0x1396678, 0xc000296030}, 0xc00054a550)
        /go/pkg/mod/github.com/azure/azure-dev@v0.0.0-20251024053325-326f63f72d65/cli/azd/pkg/azdext/service_target_manager.go:401 +0x4c3
github.com/azure/azure-dev/cli/azd/pkg/azdext.(*ServiceTargetManager).handleServiceTargetStream.func1(0x0?)
        /go/pkg/mod/github.com/azure/azure-dev@v0.0.0-20251024053325-326f63f72d65/cli/azd/pkg/azdext/service_target_manager.go:145 +0x2e
created by github.com/azure/azure-dev/cli/azd/pkg/azdext.(*ServiceTargetManager).handleServiceTargetStream in goroutine 82
        /go/pkg/mod/github.com/azure/azure-dev@v0.0.0-20251024053325-326f63f72d65/cli/azd/pkg/azdext/service_target_manager.go:144 +0x45

  |====== | Deploying service Learn French Agent

echo-agent/agent.yaml

azd up failed during publishing to ACR due to AZURE_CONTAINER_REGISTRY_ENDPOINT not being set: