Adds the capability to retrieve a property field by name (#30859)

* Adds the capability to retrieve a property field by name

Allows to retrieve a property field by name and groupID. As the name
is only unique within the context of a group, and we can have multiple
fields with the same name in the store, for this method the groupID is
directly included in the query instead of being an optional field.

* Adds the targetID parameter to correctly filter fields

* Ensure the method only retrieves non-deleted fields

---------

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

server/channels/store/timerlayer/timerlayer.go

@@ -7291,6 +7291,22 @@ func (s *TimerLayerPropertyFieldStore) Get(groupID string, id string) (*model.Pr
 	return result, err
 }
 
+func (s *TimerLayerPropertyFieldStore) GetFieldByName(groupID string, targetID string, name string) (*model.PropertyField, error) {
+	start := time.Now()
+
+	result, err := s.PropertyFieldStore.GetFieldByName(groupID, targetID, name)
+
+	elapsed := float64(time.Since(start)) / float64(time.Second)
+	if s.Root.Metrics != nil {
+		success := "false"
+		if err == nil {
+			success = "true"
+		}
+		s.Root.Metrics.ObserveStoreMethodDuration("PropertyFieldStore.GetFieldByName", success, elapsed)
+	}
+	return result, err
+}
+
 func (s *TimerLayerPropertyFieldStore) GetMany(groupID string, ids []string) ([]*model.PropertyField, error) {
 	start := time.Now()