defaults: pulse: Reduce fragment size to 22 ms

Turns out that having the fragment size be larger than 22 ms triggers a bug in Waydroid breaking it audio. Since this is a balance between latency and possibility of underruns occuring, let's reduce the recently bumped fragment size by a tiny bit to make Waydroid happy, resulting in latency lowered by 4 ms as a bonus.

added 4 commits

• 20a4b60c...4164803d - 3 commits from branch Librem5:pureos/byzantium
• 6e0c4e98 - defaults: pulse: Reduce fragment size to 22 ms

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enabled an automatic merge when the pipeline for 6e0c4e98 succeeds

merged