[TAStudio] Rerecords do not count if working with analog controls

[EZGames69]

So I was working with the recent bizhawk dolphin build forked by CasualPokePlayer and noticed my re-record count was low, it turns out this is because the rerecord counts only work when changes to inputs happen, but not changes to Analog controls, when working in TAStudio

[vadosnaprimer]

Rerecord increment is explicitly disabled while drawing, it only counts when the initial mouse down event happens. However one may start drawing below current frame (no invalidation, no rerecord) and then paint input up to above the current frame (invalidation but no rerecord).

Counting rerecords while painting was likely disabled because it'd previously count on every new invalidated frame when drawing up, or something. Obviously we want it to only count one draw up as 1 rerecord if anything was invalidated before mouse up.