chore: add local storage for image toggle

[NingLu]

Fixes #

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Description

This pull request includes updates to the localization files (en.json and zh.json) to add new strings and modify existing ones for the chatbot feature. Additionally, it modifies the ChatBot.tsx component to incorporate the new localized strings and updates the types in index.ts to support the new chatbot functionality.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

File Stats Summary

File number involved in this PR: 4, unfold to see the details:

The file changes summary is as follows:

Files	Changes	Change Summary
source/portal/src/types/index.ts	1 added, 0 removed	The code change adds a new property 'chatbotId' of type string to the SessionMessage interface and maintains the existing properties.
source/portal/src/locale/zh.json	1 added, 0 removed	这个代码更改在界面上添加了一个"显示图片"的选项,可能用于控制是否显示聊天机器人响应中的图像。
source/portal/src/locale/en.json	1 added, 0 removed	The code change adds a new string key "showFigures" to the existing object, likely for displaying figures or images in the user interface.
source/portal/src/pages/chatbot/ChatBot.tsx	62 added, 23 removed	The code changes introduce the following functionality:

1. Load the previously used chatbot ID from local storage history on component mount.
2. Store the chatbot ID from the first message in local storage history for future use.
3. Add a toggle to show/hide figures (images) in the chat messages.
4. Persist the "Show Figures" toggle state in local storage. |