Hi Ishan,
I have tried to access the same JS library using the shared URL in a sample mobile application and it's working fine for me.
see this Sample App - JSLibrary
Browser Inspect Element section view

What I did?
- Defined an OnReady Event Handler action flow for the respective screen
- Introduced an RequireScript client action node, referring the same JS library URL, within the OnReady action flow
And also I have tried to access the mobile application screen of which you have shared the url but it is not accessible because of the screen Anonymous Role uncheck.
Hope this helps you!
Kind regards,
Benjith Sam