Restore usage of some _environment_variables_extension Jitsi variables

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1377

Regresion since https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1139

roles/matrix-jitsi/templates/jvb/env.j2

@@ -22,4 +22,6 @@ JVB_OCTO_BIND_ADDRESS
 JVB_OCTO_PUBLIC_ADDRESS
 JVB_OCTO_BIND_PORT
 JVB_OCTO_REGION
-TZ={{ matrix_jitsi_timezone }}
+TZ={{ matrix_jitsi_timezone }}
+
+{{ matrix_jitsi_jvb_environment_variables_extension }}

roles/matrix-jitsi/templates/web/env.j2

@@ -91,4 +91,6 @@ XMPP_DOMAIN={{ matrix_jitsi_xmpp_domain }}
 XMPP_GUEST_DOMAIN={{ matrix_jitsi_xmpp_guest_domain }}
 XMPP_MUC_DOMAIN={{ matrix_jitsi_xmpp_muc_domain }}
 XMPP_RECORDER_DOMAIN={{ matrix_jitsi_recorder_domain }}
-TOKEN_AUTH_URL
+TOKEN_AUTH_URL
+
+{{ matrix_jitsi_web_environment_variables_extension }}