Added checked: element.checked to INPUT in elementConverters #536

Job	Run time
lint-py / python-3.x	1m 14s
test-py-cov / python-3.x	2m 53s
test-py-matrix / python-3.9 ubuntu-latest	2m 55s
lint-js / ubuntu-latest	49s
test-py-matrix / python-3.9 macos-latest	2m 48s
test-py-matrix / python-3.9 windows-latest	4m 37s
test-docs / python-3.11	3m 26s
test-py-matrix / python-3.10 ubuntu-latest	2m 47s
test-py-matrix / python-3.10 macos-latest	2m 54s
test-py-matrix / python-3.10 windows-latest	4m 22s
test-py-matrix / python-3.11 ubuntu-latest	2m 56s
test-py-matrix / python-3.11 macos-latest	2m 53s
test-py-matrix / python-3.11 windows-latest	5m 38s
test-js / ubuntu-latest	40s
	40m 52s

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