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Bug description when method tool or mcp tool with no argument and calling in stream mode, errors will occur.
method tool： java.lang.IllegalArgumentException: toolInput cannot be null or empty at org.springframework.util.Assert.hasText(Assert.java:253) at org.springframework.ai.tool.method.MethodToolCallback.call(MethodToolCallback.java:99) at org.springframework.ai.model.tool.DefaultToolCallingManager.lambda$executeToolCall$5(DefaultToolCallingManager.java:220) at io.micrometer.observation.Observation.observe(Observation.java:564) at org.springframework.ai.model.tool.DefaultToolCallingManager.executeToolCall(DefaultToolCallingManager.java:217) at
mcp tool： java.lang.RuntimeException: java.lang.IllegalArgumentException: argument "content" is null at org.springframework.ai.model.ModelOptionsUtils.jsonToMap(ModelOptionsUtils.java:107) at org.springframework.ai.model.ModelOptionsUtils.jsonToMap(ModelOptionsUtils.java:92) at org.springframework.ai.mcp.SyncMcpToolCallback.call(SyncMcpToolCallback.java:113) at org.springframework.ai.mcp.SyncMcpToolCallback.call(SyncMcpToolCallback.java:126) at org.springframework.ai.model.tool.DefaultToolCallingManager.lambda$executeToolCall$5(DefaultToolCallingManager.java:224)
Environment spring ai 1.0.1 vllm（may be is a reason）
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