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/app/properties/property_value.go

@@ -56,3 +56,7 @@ func (ps *PropertyService) UpsertPropertyValues(values []*model.PropertyValue) (
 func (ps *PropertyService) DeletePropertyValue(groupID, id string) error {
 	return ps.valueStore.Delete(groupID, id)
 }
+
+func (ps *PropertyService) DeletePropertyValuesForTarget(groupID string, targetType string, targetID string) error {
+	return ps.valueStore.DeleteForTarget(groupID, targetType, targetID)
+}