fix: update examples to use clientStarter and fix BrowserSandbox lazy init#101

chickenlj merged 2 commits intoagentscope-ai:mainagentscope-ai/agentscope-runtime-java:mainfrom

flystar32:fix/examples-clientconfig-to-clientstarterflystar32/agentscope-runtime-java:fix/examples-clientconfig-to-clientstarterCopy head branch name to clipboard