Fix wallet creation on some devices

This version fixes an issue on some devices where creating an entry in the keystore would fail, preventing new wallets from being created.

List of commits (filter on phoenix-legacy)

• https://github.com/ACINQ/phoenix/compare/android-legacy-v1.4.21...android-legacy-v1.4.22

Verifying signatures

You will need gpg and our release signing key E434ED292E85643A. Note that you can get it:

• from our website: https://acinq.co/pgp/padioupm.asc
• from github user @pm47, a committer on eclair: https://api.github.com/users/pm47/gpg_keys

To import our signing key:

$ gpg --import padioupm.asc

To verify the release file checksums and signatures:

$ gpg -d SHA256SUMS.asc > SHA256SUMS.stripped
$ sha256sum -c SHA256SUMS.stripped