Fix parsing/validation for 21939

[zvecr]

Description

• incorrect jsonschema type for react_on_keyup
  • just wrong... will look at adding something in CI to try and stop this slipping through in the future
• "value_type": "bool" currently does the wrong thing for parsing defines with no value
  • existing issue
  • #define FORCE_NKRO incorrectly becomes "force_nkro" :false
  • parse_config_h_file correctly parses to True bool -> _config_to_json then only checks for string values

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[zvecr]

Updated _config_to_json to just check for bools as true_values is used for rules.mk logic and wouldn't want to introduce issues in that pathway.