Enhance NumberSchema to reject internal whitespace while allowing leading/trailing spaces

[stormfrazier22]

Description

This PR modifies the NumberSchema to enhance number validation, addressing an issue where strings with internal whitespace (e.g., "9 9") were incorrectly passing validation.

Changes:

1. Updated the transform function in the NumberSchema constructor to:
   • Trim leading and trailing whitespace from string inputs
   • Use a regular expression to strictly validate the number format
   • Reject strings with internal whitespace or non-numeric characters

Behavior changes:

• "99 " and " 99" now pass validation (trimmed to 99)
• "9 9" now fails validation (becomes NaN)
• "9.9" continues to pass validation (becomes 9.9)
• "9,9" now fails validation (becomes NaN)

Implementation details:

parsed = parsed.trim();
if (!/^\d+(\.\d+)?$/.test(parsed)) return NaN;