Disable attachment test until attachments are formally released

Attachments are still SPI, and SPI is available on linux and windows but
not through Xcode on macOS. We can reenable this once attachments are
formalized and no longer SPI.

Author: plemarquand

assets/test/defaultPackage/Tests/PackageTests/PackageTests.swift

@@ -42,11 +42,11 @@ final class DebugReleaseTestSuite: XCTestCase {
   }
 }
 
-#if swift(>=6.1)
-@_spi(Experimental) import Testing
-#elseif swift(>=6.0)
+// #if swift(>=6.1)
+// @_spi(Experimental) import Testing
+// #elseif swift(>=6.0)
 import Testing
-#endif
+// #endif
 
 #if swift(>=6.0)
 @Test func topLevelTestPassing() {
@@ -112,11 +112,12 @@ struct MixedSwiftTestingSuite {
 }
 #endif
 
-#if swift(>=6.1)
-@Test func testAttachment() throws {
-  Attachment("Hello, world!", named: "hello.txt").attach()
-}
-#endif
+// Disabled until Attachments are formalized and released.
+// #if swift(>=6.1)
+// @Test func testAttachment() throws {
+//   Attachment("Hello, world!", named: "hello.txt").attach()
+// }
+// #endif
 
 final class DuplicateSuffixTests: XCTestCase {
   func testPassing() throws {}

test/integration-tests/testexplorer/TestExplorerIntegration.test.ts

@@ -192,7 +192,6 @@ suite("Test Explorer Suite", function () {
                         "testWithKnownIssue()",
                         "testWithKnownIssueAndUnknownIssue()",
                         "testLotsOfOutput()",
-                        "testAttachment()",
                         "DuplicateSuffixTests",
                         ["testPassing()", "testPassingSuffix()"],
                     ],
@@ -255,7 +254,8 @@ suite("Test Explorer Suite", function () {
                 );
             });
 
-            test("attachments", async function () {
+            // Disabled until Attachments are formalized and released.
+            test.skip("attachments", async function () {
                 // Attachments were introduced in 6.1
                 if (workspaceContext.swiftVersion.isLessThan(new Version(6, 1, 0))) {
                     this.skip();