[Bug] Enable selected text moving within stroke or paragraph.

### Bug Description

1. Type something.
2. Select a part — some symbols, whole word or some word.
3. Try to move selected wherever.
4. You can't

### How to Reproduce

See above.

### Expected Behavior

Like at text processors — MS Word, LibreOffice Writer or... even Telegram or browser text fields.

### Operating System

Win 8.1 x64

### AppFlowy Version(s)

0.3.2 (x64-86 ZIP-version from Github)

### Screenshots

_No response_

### Additional Context

_No response_