Change recursive watch mode test detection to be non-persistent

Otherwise, on Linux, it seems the abort signal is disregarded.

Author: novemberborn

lib/watcher.js

@@ -20,7 +20,7 @@ const END_MESSAGE = chalk.gray('Type `r` and press enter to rerun tests\nType `u
 
 export function available(projectDir) {
 	try {
-		fs.watch(projectDir, {recursive: true, signal: AbortSignal.abort()});
+		fs.watch(projectDir, {persistent: false, recursive: true, signal: AbortSignal.abort()});
 	} catch (error) {
 		if (error.code === 'ERR_FEATURE_UNAVAILABLE_ON_PLATFORM') {
 			return false;