Accurately display mute status when using volume icon or emoji

[SandaruLJ]

I noticed that when using emojis/icons in the Volume widget, it only displays the mute symbol when the volume level is 0. It disregards the actual mute status of the device altogether and only reacts to the volume level, which I found a bit misleading.

This PR fixes it by checking mute status in addition to volume when updating the widget.

Please let me know if any changes should be done.

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[tych0]

hmm:

   Downloading pywlroots-0.17.0-cp312-cp312-manylinux_2_28_x86_64.whl (10.7 MB)
     ━━━━━━━━━━━━━━━╸                         4.2/10.7 MB 2.0 MB/s eta 0:00:04
  ERROR: THESE PACKAGES DO NOT MATCH THE HASHES FROM THE REQUIREMENTS FILE. If you have updated the package versions, please update the hashes. Otherwise, examine the package contents carefully; someone may have tampered with them.
      unknown package:
          Expected sha256 25f589d719a230962a6a95a0d8e7082a635113411dc7f47477cefa88a351a993
               Got        9a865f6ca46b088087d6d4a37bf30d75f034a86aad52c297421a6b590c9d26fe

seems unrelated, let me re-run.