Explicitly enabled Gradle filesystem watching to work around gradle/gradle#17955.

Author: ianbrandt

gradle.properties

@@ -7,4 +7,10 @@ org.gradle.parallel=true
 # Gradle Versions Plugin `dependencyUpdates` task fails with:
 #org.gradle.unsafe.isolated-projects=true
 
+# Explicitly enable filesystem watching so Gradle doesn't go through its
+# default of trying to evaluate whether it can be enabled automatically, which
+# can be slow on Windows machines with mapped network drives:
+# https://github.com/gradle/gradle/issues/17955.
+org.gradle.vfs.watch=true
+
 dependency.analysis.print.build.health=true