first, listen change <img width="393" alt="微信截图_20230705175136" src="https://github.com/codemirror/codemirror5/assets/30063217/8a3f3ff8-e7e3-4248-a655-01c2574ef485"> when i input chinese <img width="764" alt="微信截图_20230705175222" src="https://github.com/codemirror/codemirror5/assets/30063217/2f90085e-e213-486b-bc0c-b81915c85cb2"> input letter <img width="694" alt="微信截图_20230705175249" src="https://github.com/codemirror/codemirror5/assets/30063217/f50d75cf-b27c-43e9-94d3-a2b1d054f3d1"> expect: not produce textMarker when i input only