tobru no as Google Pay/Wallet require full SafetyNet compliance, while GrapheneOS can pass BasicIntegrity the OS cannot pass ctsProfileMatch as that would require GrapheneOS to be whitelisted by Google.
Before the idea of bypassing the checks is brought up though as some other OSes or Root methods might allow. Please read the following: https://nitter.net/freechelmi/status/1553326311854276608#m