Fix date-time-format-apple.js

Summary:
Make date-time-format-apple.js more permissive; relax the requirement on
the characters allowed after 'Thursday'.

[Facebook]
Port of D55664318 from SH.

Reviewed By: neildhar

Differential Revision: D58147333

fbshipit-source-id: e29ba78dbdd725f6ae845b8bf496d1c99178c38f

test/hermes/intl/date-time-format-apple.js

@@ -48,7 +48,7 @@ try {
 // CHECK-NEXT: Caught{{.*}}
 
 print(new Intl.DateTimeFormat('en-GB', { dateStyle: 'full', timeStyle: 'long' }).format(date));
-// CHECK-NEXT: Thursday, 2 January 2020 at 03:45:00 GMT
+// CHECK-NEXT: Thursday{{.+}}2 January 2020 at 03:45:00 GMT
 
 print(new Intl.DateTimeFormat('ko-KR', { dateStyle: 'medium', timeStyle: 'medium' }).format(date));
 // CHECK-NEXT: 2020. 1. 2. 오전 3:45:00