feat(agent-server): add token-level streaming support to agent server WebSocket #10869

Job	Run time
build-binary-and-test (macos-latest)	3m 1s
build-binary-and-test (ubuntu-latest)	2m 50s
Check OpenAPI Schema	30s
Build & Push (golang-arm64)	7m 35s
Build & Push (python-amd64)	10m 21s
Build & Push (java-amd64)	7m 49s
Build & Push (java-arm64)	9m 51s
Build & Push (python-arm64)	12m 30s
Build & Push (golang-amd64)	8m 17s
Merge Multi-Arch Manifests (java)	10s
Merge Multi-Arch Manifests (golang)	22s
Merge Multi-Arch Manifests (python)	24s
Consolidate Build Information	3s
Update PR description with agent server image	4s
	1h 3m 47s

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