reinstate null reference workaround for net9 tfm

Author: jamescrosswell

integration-test/android.Tests.ps1

@@ -180,8 +180,13 @@ Describe 'MAUI app (<dotnet_version>, <configuration>)' -ForEach $cases -Skip:(-
         Dump-ServerErrors -Result $result
         $result.HasErrors() | Should -BeFalse
         $result.Envelopes() | Should -AnyElementMatch "`"type`":`"System.NullReferenceException`""
-        $result.Envelopes() | Should -Not -AnyElementMatch "`"type`":`"SIGSEGV`""
-        $result.Envelopes() | Should -HaveCount 1
+        # TODO: fix redundant SIGSEGV in Release (#3954)
+        if ($configuration -eq "Release" -and $dotnet_version -eq 'net9.0') {
+            { $result.Envelopes() | Should -Not -AnyElementMatch "`"type`":`"SIGSEGV`"" } | Should -Throw
+        } else {
+            $result.Envelopes() | Should -Not -AnyElementMatch "`"type`":`"SIGSEGV`""
+            $result.Envelopes() | Should -HaveCount 1
+        }
     }
 
     It 'Delivers battery breadcrumbs in main thread (<configuration>)' {