When the Android soft keyboard is active, key events from the IME carry
unreliable physicalKey data (Flutter issue #157771). The RawKeyFocusScope
handler was processing these garbled scancodes, desynchronising the hidden
TextFormField's text buffer and causing every subsequent keypress to repeat
a single character (space or '1').
Changes:
- InputModel: add androidSoftKeyboardActive flag; when set, handleKeyEvent
returns handled but skips the normal key processing pipeline. Backspace
and Enter are sent directly using reliable logicalKey data.
- remote_page.dart: set/clear the flag via onSoftKeyboardChanged callback;
fix multi-delete counting for Samsung keyboard acceleration.
Fixes: rustdesk/rustdesk#13737, rustdesk/rustdesk#9789, rustdesk/rustdesk#11073
7b04665f33