fix(internal/bufio): Default Max Token Size

[jshlbrd]

Description

• Fixes the max token size for bufio scanners

Motivation and Context

Noticed that this was wrong when working on another PR. These are not equivalent: https://go.dev/play/p/rGQz8_p5zR3. This doesn't affect deployments in AWS Lambda.

How Has This Been Tested?

Try to read a file with very large lines using any file reader app -- it should fail using the main branch but succeed with this change.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[shellcromancer]

Great catch, also confirming that I don't see anywhere else in the codebase we use bitwise XOR for exponentiation.