Adds a mechanism to delete CPA values for a given user (#30330)

* Adds a mechanism to delete CPA values for a given user

This requires improving the Property Value service to enable delete
all values for a given target, so a new method was created that allows
to delete filtering by targetType and targetID (required) and
optionally for a specific groupID in case the caller wants to affect
all values for a target (useful in case you remove a post for example
and want to delete all values pointing to that post regardless of the
feature they belong to) or only those that belong to a specific
feature.

* Fix property value tests

* Fix after merge and update method name

* Fix linter

---------

Co-authored-by: Miguel de la Cruz <miguel@ctrlz.es>
Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/store/timerlayer/timerlayer.go

@@ -7403,6 +7403,22 @@ func (s *TimerLayerPropertyValueStore) DeleteForField(id string) error {
 	return err
 }
 
+func (s *TimerLayerPropertyValueStore) DeleteForTarget(groupID string, targetType string, targetID string) error {
+	start := time.Now()
+
+	err := s.PropertyValueStore.DeleteForTarget(groupID, targetType, targetID)
+
+	elapsed := float64(time.Since(start)) / float64(time.Second)
+	if s.Root.Metrics != nil {
+		success := "false"
+		if err == nil {
+			success = "true"
+		}
+		s.Root.Metrics.ObserveStoreMethodDuration("PropertyValueStore.DeleteForTarget", success, elapsed)
+	}
+	return err
+}
+
 func (s *TimerLayerPropertyValueStore) Get(groupID string, id string) (*model.PropertyValue, error) {
 	start := time.Now()