fix: add consistent logging for non-UTF-8 Authorization headers in require_pending_session (MM-89 Issue #4)
require_admin_token uses inspect_err to log non-UTF-8 header encoding issues,
but require_pending_session silently dropped such errors with no logging.
Applied the same pattern from require_admin_token to require_pending_session
to ensure consistent behavior across both auth functions.
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malpercio.dev
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