[test] UnicodeScalarProperties: Disable when Unicode data files aren’t available

To reenable, the test needs to be configured to upload these files to the remote machine that executes the tests.

(cherry picked from commit ffab0c5)

Author: lorentey

validation-test/stdlib/UnicodeScalarProperties.swift

@@ -4,6 +4,11 @@
 // REQUIRES: optimized_stdlib
 // REQUIRES: objc_interop
 
+// This test requires access to Unicode data files in the source tree, so
+// it doesn't currently support testing on a remote device. (rdar://98993795)
+// UNSUPPORTED: remote_run
+// UNSUPPORTED: device_run
+
 @_spi(_Unicode)
 import Swift