fix: fix cursor jumping and IME focus loss

[SonyLeo]

修复输入块光标问题

场景：编辑块右侧无内容时
【已处理】1. 右侧输入英文时，光标位置不正确
【已处理】2. 右侧输入中文时，按下空格按键确认选择后，编辑器失焦
【已处理】3. 右侧输入中文，
中文输入法下，输入第二个字符时，光标移动至前一个编辑块，空格确认时，文字出现在前面的编辑块中；

另外修复了undo redo操作后数据未同步的问题

Summary by CodeRabbit

• New Features

  • Improved management of placeholders around template items in the template editor.
  • Enhanced caret positioning to prevent it from getting stuck at placeholder boundaries.
  • Added global handling for caret movement in special cases.

• Improvements

  • History and selection synchronization refined for smoother editing experience.
  • Optional id fields added to user-facing text and template item types for better flexibility.
  • Editor range information now includes direct references to start and end HTML elements.

• Bug Fixes

  • Addressed issues with template items appearing at the start or end of the editor.
  • Removed redundant logic related to input processing and placeholder handling.

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