Increase time for control modifier to create more tasks

[majjejjam]

Describe the bug
When creating a to-do, you can hold down the control modifier to activate the create more button.

If you release the control button quickly after having pressed enter, you will not be greeted by another create to-do prompt. Instead, you have to hold down control for a seemingly arbitrarily amount of time.

To Reproduce
Steps to reproduce the behavior:

1. Click the plus button to add a to-do (or use the quick add function)
2. Choose a to-do name
3. Hold down control, press enter, and then quickly release control
4. You will see the create more button highlighted, but the creation prompt won't reappear

Expected behavior
If control is held down when pressing enter, the create more action should activate and you should be greeted by another prompt.

Screenshots
Here, I'm holding control when pressing enter and then quickly releasing it.

Skarminspelning.fran.2024-09-27.14-12-26.mp4

Desktop (please complete the following information):

• Fedora Silverblue 41 with GNOME 47
• 4.11.4