Fix InputEventScreenDrag on Android

[Alex2782]

Fixes: #84138
Fixes: #84182

I haven't checked the effects on other events yet.
Event onScroll is not fired directly and is not so good for 'ScreenDrag':

androidx.core sources

Tests

test-project.zip

v4.2.beta2.official [f8818f8]

The "Drag At" and "Motion At" values are higher (the fingers have to be moved more)

beta2-Screen_recording_20231101_233924.mp4

this PR:

PR_Screen_recording_20231101_231239.mp4

[m4gr3d]

The logic looks good.

Can you add comments to the added code to clarify what it does.

[m4gr3d]

I'm seeing some scrolling artifacts when testing these changes using the Android editor; can you address them.

Screen_Recording_20240213_154028_Godot.Editor.4.debug.mp4

[Alex2782]

I'll try to find time for it again in 2 or 3 days.

[Alex2782]

@m4gr3d The new solution should be better, easier to understand and probably also perform better. I tried out various gestures with Godot Editor and checked them in Logcat. Checking 'pointerCount' is not necessary as it was in my old version.

[akien-mga]

@Alex2782 Did you intend to close this? Or did you delete the branch by mistake while cleaning up?

[Alex2782]

Sorry, my mistake, I didn't think it would be deleted here too. Can it be reopened or should I create a new PR? @AThousandShips / @akien-mga

[Zireael07]

@Alex2782: IIRC a deleted branch can't be reopened, but check your Git GUI, it might have some undo options...

[m4gr3d]

@Alex2782 Your commit still had a few issues that I addressed in db6f1c9e2f36721d7a7f7fac17f4baebdb31615d. Can you take a look and merge the commit together if the updates look good.

[m4gr3d]

Approved with the updates included in db6f1c9e2f36721d7a7f7fac17f4baebdb31615d.

The commits will need to be squashed together prior to merging.

[akien-mga]

Thanks!