Improve error logging for olm session creation failure

Summary:
This differential is created in response to the following linear issue: https://linear.app/comm/issue/ENG-4451/improve-logging-for-olm-session-creation-failure. Olm session creation failure is a seriious concern and current error handling does
not provide meaningful information for debugging purposes.

Test Plan: Delete olm sessions table from the database. Try to log in from mobile app. Ensure that meaningful logs are printed to the console.

Reviewers: tomek, ashoat

Reviewed By: tomek, ashoat

Differential Revision: https://phab.comm.dev/D8614