fix: isOnline should return false when node is offline #368

Job	Run time
js-test-and-release / check	58s
js-test-and-release / test-electron-renderer	21s
js-test-and-release / test-electron-main	19s
js-test-and-release / test-chrome-webworker	3m 59s
js-test-and-release / test-chrome	4m 14s
js-test-and-release / test-firefox-webworker	4m 37s
js-test-and-release / test-firefox	4m 44s
js-test-and-release / test-node (windows-latest, lts/*)	7m 43s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	2m 21s
js-test-and-release / test-node (ubuntu-latest, lts/*)	3m 49s
js-test-and-release / test-webkit (macos-latest, lts/*)	1m 43s
js-test-and-release / test-node (macos-latest, lts/*)	7m 58s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	1m 49s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	2m 43s
js-test-and-release / release-check	0s
js-test-and-release / release	0s
	47m 18s

Provide feedback