Quality profile date is not updated when it has a child profile

How to reproduce

1. Create a quality profile A
2. Create another quality profile B and set A as parent
3. Activate a rule in quality profile A

=> Update date of quality profile B will be updated, but not the update date of quality profile A.

Technical detail

The functional update date of quality profile is stored in RULES_PROFILES#RULES_UPDATED_AT.
This column is updated by org.sonar.server.qualityprofile.RuleActivator#activate, which will have the responsibility to activate rule on every descendant of the quality profile.

The column of the current quality profile is not updated because when reaching org.sonar.server.qualityprofile.RuleActivator#updateProfileDates(DbSession, RuleActivationContext) to update the quality profile, RuleActivationContext#getProfile is set to child quality profile and not to current quality profile.

It seems that the RuleActivationContext#currentProfile is not updated when reaching the quality profile on which a rule was activated.