Core: Only print console input if character is printable

[claywar]

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• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

Console input appears to be handled one byte at a time, and certain keys such as arrow keys are two-byte inputs, where the first input is a non-printable character causing the print to choke. In the case of arrow keys, the initial byte sent is 224, followed by a second byte which is printable.

Moves print for input character to existing isprint() condition. This is not an elegant fix, as while the first character will be ignored, in the case of arrow keys the second byte will be added to the string. (Arrow keys, for example, will still print either H, P, K, or M)

Steps to test these changes

Start console, roll face on keyboard.