[Modifier + Key] action is fired when pressing Key without modifier

[SleepProgger]

Sorry if this should be a duplicate. Its not that easy finding anything in 5000+ open issues tho.

Godot version:
3.1.2

OS/device including version:
Manjaro with kernel 5.4.2

Issue description:
When creating an action with a modifier key event.is_action_released() returns true when only pressing the key without the modifier.
There are a lot of issues with the opposite problem, but i didn't found one about this way around.

As seen in the relevant code (https://github.com/godotengine/godot/blob/3.1/core/os/input_event.cpp#L312):

bool match = get_scancode() == key->get_scancode() && (!key->is_pressed() || (code & event_code) == code);

modifiers are simply ignored when the key isn't pressed (key released).

Steps to reproduce:
Create action with an modifier. Ctrl+A for example.
In an _unhandled_input function do:

if event.is_action_released("my_ctrl_a_action"):
    print("ctrl+a action called")

and press "A".

[SleepProgger]

Still present in 3.2.1

[Janglee123]

Changing condition to this works, but don't know if it would break stuff.

bool match = get_scancode() == key->get_scancode() && (code & event_code) == code;

[akien-mga]

This is still reproducible in 4.0 RC 1.

[didier-v]

Still present in 4.1.
Also affects Input.is_action_just_released.

In 4.2 it is worse.
I tested with two actions down and alt_down.

	if Input.is_action_just_released("down"):
		print("down")
	if Input.is_action_just_released("alt_down"):
		print("alt_down")

prints "down" and "alt_down", with or without alt pressed.