qt: Make the generate password action accessible
* qt/pinentrydialog.h (PinEntryDialog): Remove unused field mGenerateTT. Remove field mGenerateActionEdit. Add field mGenerateButton. * qt/pinentrydialog.cpp (PinEntryDialog::PinEntryDialog): Initialize new field. Set up new push button. (PinEntryDialog::setGenpinLabel): Set accessible name and update visibility of new push button. (PinEntryDialog::setGenpinLabel): Set tooltip of new push button. (PinEntryDialog::setGenpinLabel): Update visibility of new push button. (PinEntryDialog::generatePin): Focus password input field.
This change makes the "Generate password" functionality accessible
via keyboard and screen reader.
- GnuPG-bug-id: T5543