Fix chimes

[mark9064]

Only thing notable here is that pushing two messages at once increases the chance of the systemTask queue getting full (which deadlocks the task as it waits forever on queue push). But I don't think it ever should fill up (10 entries), so I think it's OK.

Closes #1411

[github-actions[bot]]

Build size and comparison to main:

Section	Size	Difference
text	373224B	-16B
data	940B	0B
bss	63516B	0B