skips opening a subprocess if kivy (and thus the launcher gui) hasn't… #246

Job	Run time
Test hosting with 3.12 on ubuntu-latest	3m 14s
Test Python 3.8 ubuntu-latest	5m 6s
Test Python 3.9 ubuntu-latest	4m 32s
Test Python 3.10 ubuntu-latest	4m 8s
Test Python 3.11 ubuntu-latest	4m 6s
Test Python 3.12 ubuntu-latest	5m 57s
Test Python 3.8 windows-latest	6m 41s
Test Python 3.12 windows-latest	7m 49s
Test Python 3.12 macos-latest	3m 20s
	44m 53s

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