Migrate some security-related changes from `rolling` to `humble`#2576

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xueying4402 wants to merge 2 commits intoros2:humblefrom xueying4402:humble

+134-10

Commits on Jul 8, 2024

Fix subscription.is_serialized() for callbacks with message info (ros2#1950 )

ivanpauno
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root
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Declare rclcpp callbacks before the rcl entities (ros2#2024 )

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root
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