Receive address displayed in all capitals in QR leading to scan error

[openoms]

Testing to send to a p2wpkh-p2sh (3...) address in SentinelX.
The displayed address is correct, but the QR encoded in all caps.
This leads to an invalid address error in Electrum and scan error in Samourai Wallet
as expected since the address is case sensitive.

High level solution: don't change the case in QR encoder.