spinner: do not print escape sequences to non-tty output #4891

Job	Run time
Checks	0s
Add PR to project	4s
Checks	5m 25s
Tests (macos-13, ./fixtures/*)	6m 46s
Tests (macos-13, ./packages/*)	11m 50s
Tests (ubuntu-latest, ./fixtures/*)	4m 46s
Tests (ubuntu-latest, ./packages/*)	5m 30s
Tests (ubuntu-latest, ./tools)	33s
Tests (windows-latest, ./fixtures/*)	6m 41s
Tests (windows-latest, ./packages/*)	7m 38s
	49m 13s

Provide feedback