fix : move unreachable docstring in RegistryValidator.report and fix --strict flag

[tmdeveloper007]

Summary of What Has Been Done

In utils/registry_validator.py, the report() method had two bugs:

1. The docstring """Print validation summary.""" was placed AFTER the if json_output: return statement, making it an unreachable string literal instead of a proper method docstring.
2. The --strict flag only checked validator.errors to set the exit code. The intended behavior of treating warnings as errors in strict mode was dead code because the sys.exit(1 if args.strict and validator.warnings) line was unreachable.

Changes Made

1. Moved the docstring to the beginning of the report method.
2. Fixed the exit code logic to properly treat warnings as errors in strict mode: sys.exit(1 if validator.errors else (1 if args.strict and validator.warnings else 0)).

Impact it Made

• Developers can now read the docstring via help() or IDE tooltips.
• --strict mode now correctly returns exit code 1 when warnings are present, enabling proper CI/CD integration.

Closes #1857.

Note: Please assign this PR to the tmdeveloper007 account.

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