Fix tests after unblocking exceptions on loading script definitions

should be temporary, proper solution needed in the future

idea/src/org/jetbrains/kotlin/idea/script/AsyncScriptDefinitionsContributor.kt

@@ -42,7 +42,12 @@ abstract class AsyncScriptDefinitionsContributor(protected val project: Project)
             }
             return@write null
         }
-        backgroundTask?.queue()
+        // TODO: resolve actual reason for the exception below
+        try {
+            backgroundTask?.queue()
+        } catch (e: IllegalStateException) {
+            if (e.message?.contains("Calling invokeAndWait from read-action leads to possible deadlock") == false) throw e
+        }
     }
 
     protected abstract fun loadScriptDefinitions(previous: List<KotlinScriptDefinition>?): List<KotlinScriptDefinition>