[tests] add test for $(AdbTargetArchitecture)

Context: #8662
Context: xamarin/monodroid#1537

* Bump to xamarin/monodroid@6ba6f3b6

Changes: xamarin/monodroid@ae47ded...6ba6f3b

* [tools/msbuild] implement $(AdbTargetArchitecture) for IDEs

.external

@@ -1 +1 @@
-xamarin/monodroid:main@ae47dedcdb9d7cd83c18630b3941ecb4b9441d7c
+xamarin/monodroid:main@6ba6f3b6be8b679b7ea21e8c2fed452b43ef20e0

tests/MSBuildDeviceIntegration/Tests/InstallTests.cs

@@ -626,6 +626,22 @@ public void AdbTargetChangesAppBundle ()
 			Assert.AreNotEqual (before, after, $"{apkset} should change!");
 		}
 
+		[Test]
+		public void AdbTargetArchitecture ()
+		{
+			AssertCommercialBuild ();
+			AssertHasDevices ();
+
+			const string abi = "x86_64";
+			var proj = new XamarinAndroidApplicationProject ();
+
+			using var b = CreateApkBuilder ();
+			b.Verbosity = LoggerVerbosity.Diagnostic;
+			Assert.IsTrue (b.Install (proj, parameters: [ $"AdbTargetArchitecture={abi}" ]), "install should have succeeded.");
+			Assert.IsTrue (StringAssertEx.ContainsText (b.LastBuildOutput, $"Using $(AdbTargetArchitecture): {abi}"),
+				$"`_GetPrimaryCpuAbi` should be skipped for $(AdbTargetArchitecture)!");
+		}
+
 		[Test]
 		public void AppWithAndroidJavaSource ()
 		{