No one answered this question precisely.
I will try to explain in a few steps how to do it. I hope it will be useful to someone.
1. Export your program from Construct and unpack it.
2. Open the folder and find the file there called "package.nw".
3. Change the extension of this file from .nw to .zip.
4. Open "package.zip" and find "package.json".
5. Open package.json using a text editor.
6. There you will find a line of text: "chromium-args": "--enable-node-worker --disable-plugins --disable-internal-flash --disable-popup-blocking --allow-file-access-from-files --ignore-gpu-blacklist".
Add to these arguments: --disable-devtools
So we have:
"chromium-args": "--enable-node-worker --disable-plugins --disable-internal-flash --disable-popup-blocking --allow-file-access-from-files --ignore-gpu-blacklist --disable-devtools"
7. Save changes and close "package.zip".
8. Change the extension of this file from .zip to .nw.
And that's all. I hope I explained how easy it can be done :)
Greetings!