Pressing buttons too long returns nothing after release

Describe the bug
When pressing button A, B or A+B for more than about 3 second, nothing happens.
Carlos Pereira told me last week on Bett that might be due to a planned long press that never came into use.

A clear and concise description of what the bug is.

To Reproduce
(makecode javascript:)

input.onButtonPressed(Button.A, function () {
basic.showString("A")
})
input.onButtonPressed(Button.B, function () {
basic.showString("B")
})
basic.clearScreen()
basic.forever(function () {

})

Steps to reproduce the behavior:
Press and hold button A for more than 3 seconds

Expected behavior
Nothing happens even after releasing the button.

micro:bit version (please complete the following information):
I believe it applies to all versions (I am using the V2 micro:bit and latest official makecode)

Additional context
Say you have a microbit acting as a remote for a drone or hovercraft. You are instructed to press A + B to start the vehicle. Often people press and hold too long so they don´t get to start it. We have to tell them "To quickly press and release A+B" which is less practical.

It would be much better if the key press resulted in immediate action as soon as the key was pressed (not upon release), or at least upon release but no matter how long it was hold.

Or: Enabling long press for buttons A, B and A+B, which would give a lot more options.

Currently, there seems to be no option for a long press event (see screen shot)

Start by running the supplied MakeCode JavaScript reproduction on the micro:bit and holding A, B, and A+B for more than three seconds. No source files or tests are named, so trace the button-event entry point and first clarify whether the intended behavior is immediate action, action on release, or a long-press event. Done should include reliable behavior after long holds and coverage for the affected button combinations.