refactor 1.1 to go back until ios 14.0 and similar

Author: stefanomondino

Package.swift

@@ -6,11 +6,11 @@ import CompilerPluginSupport
 let AsyncAlgorithms_v1_0 = "AvailabilityMacro=AsyncAlgorithms 1.0:macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0"
 #if compiler(>=6.0) && swift(>=6.0)  // 5.10 doesnt support visionOS availability
 let AsyncAlgorithms_v1_1 =
-  "AvailabilityMacro=AsyncAlgorithms 1.1:macOS 13.0, iOS 16.0, tvOS 16.0, watchOS 9.0, visionOS 1.0"
+  "AvailabilityMacro=AsyncAlgorithms 1.1:macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, visionOS 1.0"
 let AsyncAlgorithms_v1_2 =
   "AvailabilityMacro=AsyncAlgorithms 1.2:macOS 15.0, iOS 18.0, tvOS 18.0, watchOS 11.0, visionOS 2.0"
 #else
-let AsyncAlgorithms_v1_1 = "AvailabilityMacro=AsyncAlgorithms 1.1:macOS 15.0, iOS 18.0, tvOS 18.0, watchOS 11.0"
+let AsyncAlgorithms_v1_1 = "AvailabilityMacro=AsyncAlgorithms 1.1:macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0"
 let AsyncAlgorithms_v1_2 =
   "AvailabilityMacro=AsyncAlgorithms 1.2:macOS 15.0, iOS 18.0, tvOS 18.0, watchOS 11.0"
 #endif

Tests/AsyncAlgorithmsTests/TestShare.swift

@@ -573,7 +573,6 @@ final class TestShare: XCTestCase {
     XCTAssertEqual(results2, [])  // Should be empty since source is exhausted
   }
 
-  @available(AsyncAlgorithms 1.1, *)
   func test_share_rethrows_failure_type_on_backported() async {
     let shared = AsyncThrowingStream<Void, Error> {
       $0.finish(throwing: TestError.failure)
@@ -589,8 +588,6 @@ final class TestShare: XCTestCase {
 
   func test_share_rethrows_failure_type_without_falling_back_to_any_error() async {
     if #available(AsyncAlgorithms 1.2, *) {
-      
- 
       // Ensure - at compile time - that error is effectively a TestError
       let shared: some AsyncSequence<Void, TestError> = FailingSequence(TestError.failure).share()
       do {