[iron] Bugfix for incorrect playback rate changes when pressing buttons (backport #1513)

[mergify]

This is an automatic backport of pull request #1513 done by Mergify.
Cherry-pick of 95f78b6 has failed:

On branch mergify/bp/iron/pr-1513
Your branch is up to date with 'origin/iron'.

You are currently cherry-picking commit 95f78b6.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   rosbag2_transport/test/rosbag2_transport/test_keyboard_controls.cpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   rosbag2_transport/src/rosbag2_transport/player.cpp

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[MichaelOrlov]

Gist: https://gist.githubusercontent.com/MichaelOrlov/2aac7c06e1123651d21198e57fa71bea/raw/79dde56c860b5a2688407533bbff39c8fcd29701/ros2.repos
BUILD args: --packages-above-and-dependencies rosbag2_transport rosbag2_tests
TEST args: --packages-above rosbag2_transport rosbag2_tests
ROS Distro: iron
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/13051

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