Extracts repeated inline styles into <head> <style> to improve the
text-to-HTML ratio flagged by mail checkers. Removes the decorative
watermark <img> (opacity 0.07, barely visible) which was the only
image element and triggered the "too many images" classification.
Cleans up the now-unused ProvisioningProperties dependency from
EmailConnectorService and PasswordResetNotificationService.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
f681784e7e