Fix Bluetooth log spamming

[elParaguayo]

Bluetooth widget can spam the logs when device awakens from sleep and resources are not immediately available.

[ramnes]

Is this the kind of spam that will get fixed?

2024-01-18 10:52:56,347 ERROR libqtile loop.py:_handle_exception():L62 Exception in event loop:
Traceback (most recent call last):
  File "libqtile/widget/bluetooth.py", line 277, in update_props
    self.widget.refresh()
  File "libqtile/widget/bluetooth.py", line 582, in refresh
    self.show_line()
  File "libqtile/widget/bluetooth.py", line 617, in show_line
    self.update(self.format_object(obj))
  File "libqtile/widget/base.py", line 754, in update
    old_width = self.layout.width
                ^^^^^^^^^^^^^^^^^
  File "libqtile/backend/base/drawer.py", line 421, in width
    return self.layout.get_pixel_size()[0]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "libqtile/pangocffi.py", line 137, in get_pixel_size
    pango.pango_layout_get_pixel_size(self._pointer, width, height)
TypeError: initializer for ctype 'PangoLayout *' must be a cdata pointer, not NoneType

[elParaguayo]

@ramnes in a word: no.

That's an issue with textbox based widgets and it drives me insane. I thought I'd fixed it many times but there are some cases still getting through. I'll look at that again.

The bluetooth spamming is to do with the bluez interface not immediately being ready after resume (more annoyingly, some interfaces take longer than other) and so some of the calls fail.

I'm not sure I'll have time to find and patch all the cases before the weekend (which is when @tych0 wants to do the next release). However, I can make the logger.debug change that you suggested and then we can merge this one as it still has some improvements over the current one.

[github-actions]

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