chore: use agent workflow for examples (#1726)

apps/next/src/app/(home)/page.tsx

.../next/src/content/docs/llamaindex/examples/other_llms.mdx

...tent/docs/llamaindex/getting_started/setup/typescript.mdx

...c/content/docs/llamaindex/guide/agents/2_create_agent.mdx

...rc/content/docs/llamaindex/guide/agents/3_local_model.mdx

...rc/content/docs/llamaindex/guide/agents/4_agentic_rag.mdx

.../content/docs/llamaindex/guide/agents/5_rag_and_tools.mdx

apps/next/src/content/docs/llamaindex/modules/tool/index.mdx

examples/agent/utils/tools.ts

examples/agentworkflow/with-ollama.ts

examples/anthropic/agent.ts

examples/gemini/agent.ts