[MIRROR] Improves popper/dropdown performance (#1534) #3395

Job	Run time
Run Linters	2m 55s
Collect data for other tasks	17s
Compile Maps	3m 12s
Windows Build	2m 32s
Check Alternate Tests	0s
Integration Tests (birdshot) / run_integration_tests	11m 2s
Integration Tests (blueshift) / run_integration_tests	11m 50s
Integration Tests (deltastation) / run_integration_tests	11m 26s
Integration Tests (gateway_test) / run_integration_tests	12m 44s
Integration Tests (icebox) / run_integration_tests	11m 38s
Integration Tests (metastation) / run_integration_tests	10m 44s
Integration Tests (kilostation2) / run_integration_tests	11m 7s
Integration Tests (multiz_debug) / run_integration_tests	10m 52s
Integration Tests (northstar) / run_integration_tests	12m 8s
Integration Tests (nssjourney) / run_integration_tests	11m 0s
Integration Tests (runtimestation) / run_integration_tests	10m 16s
Integration Tests (tramstation) / run_integration_tests	11m 28s
Integration Tests (voidraptor) / run_integration_tests	11m 7s
Compare Screenshot Tests	53s
	2h 37m 11s

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