[Session] Remove global agent (#3852)

* Remove logs and outdated comments

* Move side effect upwards

* Pull refreshedAccount next to usage

* Simplify account refresh logic

* Extract setupPublicAgentState()

* Collapse setStates into one

* Ignore events from stale agents

* Use agent from state

* Remove clearCurrentAccount

* Move state to a reducer

* Remove global agent

* Fix stale agent reference in create flow

* Proceed to onboarding even if setting date fails

---------

Co-authored-by: Eric Bailey <git@esb.lol>

src/view/com/modals/DeleteAccount.tsx

@@ -31,7 +31,7 @@ export function Component({}: {}) {
   const theme = useTheme()
   const {currentAccount} = useSession()
   const {getAgent} = useAgent()
-  const {clearCurrentAccount, removeAccount} = useSessionApi()
+  const {removeAccount} = useSessionApi()
   const {_} = useLingui()
   const {closeModal} = useModalControls()
   const {isMobile} = useWebMediaQueries()
@@ -69,7 +69,6 @@ export function Component({}: {}) {
       Toast.show(_(msg`Your account has been deleted`))
       resetToTab('HomeTab')
       removeAccount(currentAccount)
-      clearCurrentAccount()
       closeModal()
     } catch (e: any) {
       setError(cleanError(e))