Simplify browser regression test for unused timers in Edge #2806 #10513

Job	Run time
Detect changed paths	5s
Event File	3s
Build (macOS) (21, x86_64) / build	11m 6s
Build (macOS) (21, aarch64) / build	4m 56s
Build (Windows) (21) / build	12m 58s
Build (Linux) (21, gtk3, x11) / build	8m 42s
Build (Linux) (21, gtk4, wayland) / build	11m 2s
Build (Linux) (21, gtk4, x11) / build	9m 17s
	58m 9s

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