Prep-N-Print with Flex

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1. Support printing on OS14.
2. Retain auto-login when switching from Wi-Fi to cellular.
3. Increased button tap zones.
4. Disable PRINT button when quantity is zero.
5. Fixed wrong day of week showing when shelf life exceeds 30 days.
6. Fixed less common shifts expiration calculations.
7. Improved printer firmware update process when using multiple mobile devices.
8. Fixed stretched images on app entry pages.
9. Set Prompt Preservation to zero if entry box is cleared.