fix(gui): add workaround for showFullScreen #147

Job	Run time
Lint & Test (macos-11)	2m 5s
Test Briefcase build (macos-11)	2m 1s
Lint & Test (macos-14)	1m 55s
Test Briefcase build (macos-14)	1m 52s
Lint & Test (windows-2022)	1m 50s
Test documentation build	46s
Test Briefcase build (windows-2022)	1m 55s
Lint & Test (ubuntu-22.04)	1m 31s
Test Python package build (macos-11)	36s
Test Briefcase build (ubuntu-22.04)	2m 6s
Test Python package build (macos-14)	18s
Test Python package build (windows-2022)	57s
CodeQL (javascript)	46s
Test Python package build (ubuntu-22.04)	23s
CodeQL (python)	1m 48s
Upload coverage	1s
Deploy github pages	1s
Briefcase build & draft release	1s
Publish to PyPi	1s
	20m 53s

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