Cannot hide terminal find widget when pressing `esc`

- VS Code Version: stable and from sources

Steps to Reproduce:

1. open terminal panel
3. split terminal
4. show find widget in both terminal
5. focus first terminal and press `esc` to hide find widget
6. :bug: focus second terminal and press `esc` to hide find widget, doesn't work

Regression from https://github.com/microsoft/vscode/pull/175785