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95ab7149fe
Fix two issues that cause `import cv2` to fail when building with -DBUILD_opencv_gapi=OFF: 1. In `has_all_required_modules()`, the function parameter `type_node` was ignored in favor of the enclosing scope's loop variable `node`. This works by accident when called as `has_all_required_modules(node)` but is incorrect — the parameter should be used directly. 2. In `__load_extra_py_code_for_module()`, only `ImportError` was caught. When a stale gapi submodule directory exists from a previous build, gapi/__init__.py raises `AttributeError` (not `ImportError`) because it tries to access C++ bindings that don't exist. Now catches both exception types for defense-in-depth. Refs: #26098
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