refactor: align lucide icons in antd button, use more lucide icons

[alephpiece]

What this PR does

• 让 lucide icon 在 antd button 中和文字对齐。
• 迁移一些 icon 到 lucide icon。
• 固定/取消固定话题使用不同图标。
• 升级 antd 到 5.26.7
  • 移除 patch 里面 dropdown icon 的 margin-top，改在 ant.scss 里面对齐

	BEFORE	AFTER
icon 和文字对齐
添加助手按钮
助手右键菜单
话题右键菜单
TokenCount
消息导出图标
确认框图标
工具调用

Fixes #

Why we need it and why it was done in this way

The following tradeoffs were made:

The following alternatives were considered:

Links to places where the discussion took place:

Breaking changes

If this PR introduces breaking changes, please describe the changes and the impact on users.

Special notes for your reviewer

Checklist

This checklist is not enforcing, but it's a reminder of items that could be relevant to every PR.
Approvers are expected to review this list.

• PR: The PR description is expressive enough and will help future contributors
• Code: Write code that humans can understand and Keep it simple
• Refactor: You have left the code cleaner than you found it (Boy Scout Rule)
• Upgrade: Impact of this change on upgrade flows was considered and addressed if required
• Documentation: A user-guide update was considered and is present (link) or not required. You want a user-guide update if it's a user facing feature.

Release note