Update templates to cancel the auto command in AutononmousExit

[kcooney]

This change updates the templates that included code that canceled autonomous commands in TeleopInit() to instead cancel them in AutonomousExit().

While in a real competition teleop mode starts after autonomous mode ends, when using the simulator the user can change modes in any order. Commands scheduled in AutonomousInit() should therefore be canceled in AutonomousExit().

[sciencewhiz]

I think canceling should work in autonomousExit, but you wouldn't want to do more like start a new command (that doesn't run when disabled) in autonomousExit, since the robot is disabled at that point.

[auscompgeek]

I agree, I think all the templates should still override teleopInit (to do nothing).

[kcooney]

I agree, I think all the templates should still override teleopInit (to do nothing).

I added back teleopInit() and TeleopInit() (with empty method bodies) to the places where I removed it.

[kcooney]

I think canceling should work in autonomousExit, but you wouldn't want to do more like start a new command (that doesn't run when disabled) in autonomousExit, since the robot is disabled at that point.

With my changes, the only things the templates do on autonomousExit() or AutonomousExit() is cancel the auto command (if any).

[kcooney]

@PeterJohnson I'm not sure how do I get one of the WPILib maintainers to look at this. Could you help?

[KangarooKoala]

If someone's reviewed already, you can usually just re-request their review in GitHub. If that hasn't happened yet (like this this case), usually it comes down to either asking here on GitHub or in the programming channels of the unofficial FRC Discord server.

I will note that things have been fairly busy for the last few months with preparations for the 2027 SystemCore changes, and stuff like updating templates can fall through the cracks of reviewing a bit more easily. However, people seem to still be fairly good at reviewing once reminded.

(For what it's worth as someone who's not an actual WPILib maintainer, the changes seem fine to me. You may want to rebase, though, since it's been so long.)