MINOR: stream: Save last evaluated rule on invalid yield

MINOR: stream: Save last evaluated rule on invalid yield

When an action yields while it is not allowed, an internal error is
reported. This interrupts the processing. So info about the last evaluated
rule must be filled.

This patch may be bakcported if needed. If so, the commit ("MINOR: stream:
Save last evaluated rule on invalid yield") must be backported first.

(cherry picked from commit 0b7605491e4ccb66a0468c219306adf354355e0d)
[cf: Of course the mentionned commit to be backported with this one is wrong. It
     must be "BUG/MINOR: http-ana: Report internal error if an action yields on
     a final eval"].
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>