[native] Add alerts to SQLiteContextProvider with exception info

Summary: Add additional "logging" (via Alert.alert(...)) to provide user with information about potential issues with setting of threadStore/messageStore or with fetchNewCookieFromNativeCredentials. The logic/behavior should be equivalent to before.

Test Plan: NA, careful reading

Reviewers: marcin, tomek, kamil, ashoat

Reviewed By: ashoat

Subscribers: ashoat, abosh

Differential Revision: https://phab.comm.dev/D5357