1. fixes ActionManagerEx crashes.
Merge branches 'v3' and 'v3' of https://github.com/cocos2d/cocos2d-x into v3_fixesActionManagerCrash
Merge pull request #7495 from boyu0/physics_flip_bug

Fix the bug: flip scale for physics body make it's size incorrect.
[ci skip]
Merge pull request #7497 from chengstory/v3_fixesActionManagerCrash

V3 fixes action manager crash