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/sqlstore/property_value_store.go

@@ -339,3 +339,26 @@ func (s *SqlPropertyValueStore) DeleteForField(fieldID string) error {
 
 	return nil
 }
+
+func (s *SqlPropertyValueStore) DeleteForTarget(groupID string, targetType string, targetID string) error {
+	if targetType == "" || targetID == "" {
+		return store.NewErrInvalidInput("PropertyValue", "target", "type or id empty")
+	}
+
+	builder := s.getQueryBuilder().
+		Delete("PropertyValues").
+		Where(sq.Eq{
+			"TargetType": targetType,
+			"TargetID":   targetID,
+		})
+
+	if groupID != "" {
+		builder = builder.Where(sq.Eq{"GroupID": groupID})
+	}
+
+	if _, err := s.GetMaster().ExecBuilder(builder); err != nil {
+		return errors.Wrap(err, "property_value_delete_for_target_exec")
+	}
+
+	return nil
+}