[3.x] Fix wrong collision reported on move_and_collide

[fabriceci]

3.x version of #59438

[KoBeWi]

Checked with my project and it fixes both issues I reported.

[akien-mga]

Thanks!

[jitspoe]

So this completely breaks my character movement (finally synced to latest 3.x for the first time this year). I'm not sure if there are other custom engine changes I've made that cause this to behave differently, different data settings, or what, but the long and short of it is that move_and_collide() is not returning anything, so my character is perpetually "falling" when on the ground, building up velocity until I guess it moves far enough in 1 frame to get past the margin?, then repeats.

I'll have to try making a simpler repro case with a vanilla 3.x, but in the mean time, I've had to comment out the && col.collision_safe_fraction < 1

[jitspoe]

Yeah, this is a game breaking issue in vanilla Godot 3.5. I see there's already a bug for this here: #62153 I'll post more info there.