Merge pull request #77175 from simanerush/se-0449-flag

[SE-0449] Promote `GlobalActorInferenceCutoff` to upcoming feature.

Author: simanerush

include/swift/Basic/Features.def

@@ -219,6 +219,7 @@ UPCOMING_FEATURE(RegionBasedIsolation, 414, 6)
 UPCOMING_FEATURE(DynamicActorIsolation, 423, 6)
 UPCOMING_FEATURE(NonfrozenEnumExhaustivity, 192, 6)
 UPCOMING_FEATURE(GlobalActorIsolatedTypesUsability, 0434, 6)
+UPCOMING_FEATURE(GlobalActorInferenceCutoff, 0449, 6)
 
 // Swift 7
 UPCOMING_FEATURE(ExistentialAny, 335, 7)
@@ -234,7 +235,6 @@ EXPERIMENTAL_FEATURE(MacrosOnImports, true)
 EXPERIMENTAL_FEATURE(TupleConformances, false)
 EXPERIMENTAL_FEATURE(FullTypedThrows, false)
 EXPERIMENTAL_FEATURE(SameElementRequirements, false)
-EXPERIMENTAL_FEATURE(GlobalActorInferenceCutoff, false)
 EXPERIMENTAL_FEATURE(KeyPathWithStaticMembers, false)
 
 // Whether to enable @_used and @_section attributes

test/Concurrency/nonisolated_rules.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple -swift-version 6 -enable-experimental-feature GlobalActorInferenceCutoff -parse-as-library %s -emit-sil -o /dev/null -verify -strict-concurrency=complete
+// RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple -swift-version 6 -parse-as-library %s -emit-sil -o /dev/null -verify -strict-concurrency=complete
 
 // REQUIRES: concurrency
 // REQUIRES: asserts