Temporarily mark test unsupported for watchsimulator-i386.

Author: varungandhi-apple

validation-test/stdlib/Arrays.swift.gyb

@@ -7,6 +7,9 @@
 // RUN: %target-codesign %t/Arrays && %line-directive %t/main.swift -- %target-run %t/Arrays
 // REQUIRES: executable_test
 
+// FIXME: Test fails for watchsimulator-i386 (rdar://79626782)
+// UNSUPPORTED: CPU=i386 && OS=watchos
+
 import Swift
 import StdlibUnittest
 import StdlibCollectionUnittest