Invalid behavior in how runSofa propagates keys pressed to the scene.

[damienmarchal]

Problem

Description
runSofa does not propagate correctly the key pressed & release event because of the weird use of the the CTRL combination.

Steps to reproduce

import Sofa

class Test(Sofa.Core.Controller):
	def __init__(self, *args, **kwargs):
		Sofa.Core.Controller.__init__(self,*args, **kwargs)

	def onKeypressedEvent(self, event):
		print("KEY PRESSED", event)

	def onKeyreleasedEvent(self, event):
		print("KEY RELEASED", event)

def createScene(root):
	root.addObject(Test(name="Hello"))

Start a simulation and keep pressing CTRL+A key. It will print!

KEY PRESSED: {...}
KEY RELEASED: {...}
...  /// lot of repetition
KEY PRESSED: {...}
KEY RELEASED: {...}

Expected behavior
It should print a single KEY PRESSED & KEY RELEASED.

[damienmarchal]

Again one more use case for that feature: sofa-framework/SofaPython3#184