Enable ICUResourceTimeZone_feature to match FOUNDATION_FRAMEWORK (#1990) (#1998)

Co-authored-by: Tina L <49205802+itingliu@users.noreply.github.com>

Author: jmschonfeld

Sources/FoundationInternationalization/TimeZone/TimeZone_ICU.swift

@@ -48,7 +48,7 @@ internal func foundation_swift_ICUResourceTimeZone_feature_enabled() -> Bool {
     _foundation_swift_ICUResourceTimeZone_feature_enabled()
 }
 #else
-internal func foundation_swift_ICUResourceTimeZone_feature_enabled() -> Bool { return false }
+internal func foundation_swift_ICUResourceTimeZone_feature_enabled() -> Bool { return true }
 #endif
 
 final class _TimeZoneICU: _TimeZoneProtocol, Sendable {