Fix freebuff stale session takeover #519

Job	Run time
build-freebuff	1m 7s
build-and-smoke-freebuff-windows	2m 36s
e2e-startup	1m 12s
e2e-code-edit	55s
e2e-help-command	1m 14s
e2e-slash-commands	53s
e2e-ads-behavior	1m 6s
e2e-version	1m 2s
e2e-agent-startup	2m 25s
e2e-terminal-command	1m 7s
	13m 37s

Provide feedback