Relax timezone_IDforWindowsID_basic2.phpt expectations

Apparently, some ICU versions report "America/Los_Angeles" for the `ZZ`
case, what matches the behavior of ICU 76.1 (on Windows).  Possibly,
there has been some bug fix backport on some systems.  Anyhow, either
seems fine, so we're not picky about that.

Closes GH-17669.

Author: cmb69

ext/intl/tests/timezone_IDforWindowsID_basic2.phpt

@@ -24,7 +24,7 @@ foreach ($tzs as $tz => $regions) {
   }
 }
 ?>
---EXPECT--
+--EXPECTF--
 ** Gnomeregan
 bool(false)
 Error: intltz_get_windows_id: Unknown windows timezone: U_ILLEGAL_ARGUMENT_ERROR
@@ -35,7 +35,7 @@ string(19) "America/Los_Angeles"
 string(17) "America/Vancouver"
 string(19) "America/Los_Angeles"
 string(19) "America/Los_Angeles"
-string(7) "PST8PDT"
+string(%d) "%r(PST8PDT|America\/Los_Angeles)%r"
 ** Romance Standard Time
 string(12) "Europe/Paris"
 string(15) "Europe/Brussels"