Bug: The Numerical Input (problem) editor accepts text inputs

[ChrisChV]

Ref: #2849 (review)

Steps to reproduce

• Add a problem - numerical input, in a course or library.
• In the Answer field, fill it with an input that starts with text letters, like 'testText'
• BUG: The problem can be saved with that data. This is not expected; a verification error should occur.

https://www.loom.com/share/9bfd9025aa944afa8ffc4c1780e9624a

[bradenmacdonald]

@jesusbalderramawgu FYI. Wondering if you guys want to take this on?

[jesusbalderramawgu]

@jesusbalderramawgu FYI. Wondering if you guys want to take this on?

Hi, sure. I can work on this!

[jesusbalderramawgu]

assign me