remove display_confirm field

[grod220]

Field in EphemeralAddressRequest is no longer valid

Reference: https://discord.com/channels/824484045370818580/1044394105498771506/1202648940265340938

[grod220]

@Valentine1898 fyi

[conorsch]

Protobuf lint is failing with

Run bufbuild/buf-breaking-action@v1
Error: Previously present field "2" with name "display_confirm" on message "EphemeralAddressRequest" was deleted.
Error: buf found 1 breaking changes.

because this is indeed a breaking change. We're aware and accept that, and in fact are trying conscientiously to frontload breaking changes prior to release of Testnet 65. As long as the other CI jobs pass, good to merge.