Two repos called clear() during resetForAccountSwitch() were doing
`prefs.edit().clear().apply()` on their SharedPreferences files while
those files were still pointing at the outgoing account:
- CustomEmojiRepository wipes its own per-pubkey file, erasing the
"most used" emoji frequency map. No relay mirror, so the data was
lost for good.
- BlossomRepository shares `wisp_prefs_{pubkey}` with KeyRepository, so
its full-file wipe also took out local_relay, relays, dm_relays, etc.
Most of those keys came back via replaceable-event refetches, but
local_relay has no network source and stayed null.
Drop the disk wipe from both clear() methods. The subsequent
reload(newPubkey) already repoints prefs to the incoming account's file.
Barry Deen
e245b2fbde