[bug] Unable to type when the text is selected

### what happened?

<img width="529" height="57" alt="Image" src="https://github.com/user-attachments/assets/5928714c-5502-4037-87cb-1eaaf420a058" />

1. Select text
2. Try to type over

### marka.md version

Version 1.5.14

### platform

macOS (Apple Silicon)

### console output / screenshots (optional)

```shell

```