Update a few tests to correctly build for the host platform on linux

Author: owenv

Tests/SWBBuildSystemTests/CustomTaskBuildOperationTests.swift

@@ -48,10 +48,12 @@ fileprivate struct CustomTaskBuildOperationTests: CoreBasedTests {
                     TestBuildConfiguration(
                         "Debug",
                         buildSettings: [
+                            "ARCHS": "$(ARCHS_STANDARD)",
                             "GENERATE_INFOPLIST_FILE": "YES",
                             "PRODUCT_NAME": "$(TARGET_NAME)",
                             "SWIFT_VERSION": try await swiftVersion,
-                            "SDKROOT": "auto",
+                            "SDKROOT": "$(HOST_PLATFORM)",
+                            "SUPPORTED_PLATFORMS": "$(HOST_PLATFORM)",
                             "CODE_SIGNING_ALLOWED": "NO",
                             "MACOSX_DEPLOYMENT_TARGET": "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)"
                         ]),
@@ -105,7 +107,7 @@ fileprivate struct CustomTaskBuildOperationTests: CoreBasedTests {
                     """
             }
 
-            try await tester.checkBuild(parameters: parameters) { results in
+            try await tester.checkBuild(parameters: parameters, runDestination: .host) { results in
                 results.checkWarning(.contains("this is a warning"))
                 results.checkNoDiagnostics()
             }

Tests/SWBTaskConstructionTests/SwiftTaskConstructionTests.swift

@@ -3937,7 +3937,9 @@ fileprivate struct SwiftTaskConstructionTests: CoreBasedTests {
                             TestBuildConfiguration("Debug", buildSettings: [
                                 "SWIFT_WARNINGS_AS_WARNINGS_GROUPS": "Unsafe DeprecatedDeclaration",
                                 "SWIFT_EXEC": swiftCompilerPath.str,
-                                "CODE_SIGN_IDENTITY": ""
+                                "CODE_SIGN_IDENTITY": "",
+                                "SDKROOT": "$(HOST_PLATFORM)",
+                                "SUPPORTED_PLATFORMS": "$(HOST_PLATFORM)",
                             ]),
                         ],
                         buildPhases: [
@@ -3949,7 +3951,7 @@ fileprivate struct SwiftTaskConstructionTests: CoreBasedTests {
 
             let tester = try await TaskConstructionTester(getCore(), testProject)
 
-            try await tester.checkBuild(BuildParameters(configuration: "Debug", overrides: ["SWIFT_VERSION": swiftVersion])) { results in
+            try await tester.checkBuild(BuildParameters(configuration: "Debug", overrides: ["SWIFT_VERSION": swiftVersion]), runDestination: .host) { results in
                 results.checkTarget("TargetName") { target in
                     results.checkTask(.matchTarget(target), .matchRuleType("SwiftDriver Compilation")) { task in
                         task.checkCommandLineContains([
@@ -3981,7 +3983,9 @@ fileprivate struct SwiftTaskConstructionTests: CoreBasedTests {
                             TestBuildConfiguration("Debug", buildSettings: [
                                 "SWIFT_WARNINGS_AS_ERRORS_GROUPS": "UnknownWarningGroup PreconcurrencyImport",
                                 "SWIFT_EXEC": swiftCompilerPath.str,
-                                "CODE_SIGN_IDENTITY": ""
+                                "CODE_SIGN_IDENTITY": "",
+                                "SDKROOT": "$(HOST_PLATFORM)",
+                                "SUPPORTED_PLATFORMS": "$(HOST_PLATFORM)",
                             ]),
                         ],
                         buildPhases: [
@@ -3993,7 +3997,7 @@ fileprivate struct SwiftTaskConstructionTests: CoreBasedTests {
 
             let tester = try await TaskConstructionTester(getCore(), testProject)
 
-            try await tester.checkBuild(BuildParameters(configuration: "Debug", overrides: ["SWIFT_VERSION": swiftVersion])) { results in
+            try await tester.checkBuild(BuildParameters(configuration: "Debug", overrides: ["SWIFT_VERSION": swiftVersion]), runDestination: .host) { results in
                 results.checkTarget("TargetName") { target in
                     results.checkTask(.matchTarget(target), .matchRuleType("SwiftDriver Compilation")) { task in
                         task.checkCommandLineContains([