Polish for the transition from GameOverSubState back into PlayState.

[ImCodist]

When retrying from the GameOverSubState the current implementation has some issues due to being a sub state now.
This PR attempts to fix those issues.

Things that are altered:

• The "vwoosh" transition is removed from game overs.
• Notes are cleaned before entering the sub state, fixing a flicker effect while the black fade out is playing.
• The health bar (and its icons) no longer lerp back to the default value upon returning to PlayState.
• The score is no longer retained for one frame.

The way this is done is admittedly a little hacky, but is (what i believe to be) the best way around it without making any major alterations to the code. (Scary)

I am unsure if the vwoosh transition and the health bar lerp is intended when retrying a song through the GameOverSubState. So those changes are subjective.
Completely understand if this isn't merged due to my lack of information on that regard.

Heres a before and after video:

itsthelittlethings.mp4

[Raltyro]

hi codist