chatflow agent调用custom tool，toolInput参数类型错误

[latincross]

Describe the bug

上述操作，toolInput参数应该为json对象，但是传入参数为json字符串，导致schema错误。

To Reproduce

如bug描述

Expected behavior

toolInput参数应该为json对象。

Screenshots

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Flow

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Use Method

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Flowise Version

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Operating System

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Browser

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Additional context

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[HenryHengZJ]

We recommend using Agent node from Agentflow