Squeekboard is not working reliably when trying to input text to a window.

Steps to reproduce:

1. Run Squeekboard
2. Run WAYLAND_DEBUG=1 yad --entry 2&>1 | grep text
3. Type in any two buttons

Expected: The entry field has text from both input events, and they come from the text-input interface
Actual: the text does not come in as text-input (may come as keyboard events).

Problem

When clicking on the layer-surface panel of squeekboard, despite KeyboardInteractivity=False, the yad application receives a leave event [email protected], causing it to disable text input. Then the input method has nowhere to send to.

Actual scenario:

1. Click on layer-shell panel
2. yad receives [email protected]
3. yad sends "disable"
4. input method receives "inactive"
5. Input method receives click. Input method can't send text to inactive interface.

Expected:

1. Click on layer-shell panel
2. Yad receives no event directly caused by that
3. Input method receives click.
4. Input method sends text to the active interface
5. Yad receives text

Diagnosis

This looks like disabling keyboard interactivity on the layer shell doesn't prevent it from taking the input-method focus.

I'll try to figure it out.