Random folder named test on the PATH breaks TerminalBuilder

[lrytz]

The new detection of utilities added in 1ac766f picks up folders named test on the path.

This broke sbt for me (version 1.9.9 upgraded JLine from 3.19.0 to 3.24.1). Even under FINEST logging there's no related message, exceptions are silenced:

jline3/terminal/src/main/java/org/jline/terminal/impl/exec/ExecTerminalProvider.java

Lines 132 to 139 in 19c031c

	try {
	Process p = new ProcessBuilder(OSUtils.TEST_COMMAND, "-t", Integer.toString(stream.ordinal()))
	.inheritIO()
	.start();
	return p.waitFor() == 0;
	} catch (Throwable t) {
	// ignore
	}