Fix used extension check false positive from usused object or behavio…

…r events (#7331)

- Don't show in changelog

Core/GDCore/IDE/Events/UsedExtensionsFinder.cpp

@@ -69,9 +69,16 @@ bool UsedExtensionsFinder::DoVisitInstruction(gd::Instruction& instruction,
                         project.GetCurrentPlatform(), instruction.GetType())
                   : gd::MetadataProvider::GetExtensionAndActionMetadata(
                         project.GetCurrentPlatform(), instruction.GetType());
-  result.AddUsedExtension(metadata.GetExtension());
-  for (auto&& includeFile : metadata.GetMetadata().GetIncludeFiles()) {
-    result.AddUsedIncludeFiles(includeFile);
+  // Unused event-based objects or events-based behaviors may use object and
+  // behavior instructions that should not be detected as extension usage.
+  // The extension of actually used objects and behaviors will be detected on
+  // scene objects. This is why object or behavior instructions usually don't
+  // have any import.
+  if (!metadata.GetMetadata().GetIncludeFiles().empty()) {
+    result.AddUsedExtension(metadata.GetExtension());
+    for (auto &&includeFile : metadata.GetMetadata().GetIncludeFiles()) {
+      result.AddUsedIncludeFiles(includeFile);
+    }
   }
 
   gd::ParameterMetadataTools::IterateOverParameters(
@@ -199,9 +206,16 @@ void UsedExtensionsFinder::OnVisitFunctionCallNode(FunctionCallNode& node) {
       return;
   }
 
-  result.AddUsedExtension(metadata.GetExtension());
-  for (auto&& includeFile : metadata.GetMetadata().GetIncludeFiles()) {
-    result.AddUsedIncludeFiles(includeFile);
+  // Unused event-based objects or events-based behaviors may use object and
+  // behavior expressions that should not be detected as extension usage.
+  // The extension of actually used objects and behaviors will be detected on
+  // scene objects. This is why object or behavior expressions usually don't
+  // have any import.
+  if (!metadata.GetMetadata().GetIncludeFiles().empty()) {
+    result.AddUsedExtension(metadata.GetExtension());
+    for (auto &&includeFile : metadata.GetMetadata().GetIncludeFiles()) {
+      result.AddUsedIncludeFiles(includeFile);
+    }
   }
 };