Remove jQuery `.attr` from the reaction selector (#30052)
- Switched from jQuery `attr` to plain javascript `getAttribute`
- Tested the reaction selector and it works as before
Signed-off-by: Yarden Shoham <git@yardenshoham.com>
(cherry picked from commit 2e31a2800e1112ee0ab5a8d3c66b0fba2e737870)
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