pg: resolve PG string datetime values to V time.Time ones (#14336)

Co-authored-by: Merlin Diavova <md@merlindiaova.org>

vlib/pg/orm.v

@@ -266,6 +266,11 @@ fn str_to_primitive(str string, typ int) ?orm.Primitive {
 			return orm.Primitive(str)
 		}
 		orm.time {
+			if str.contains_any(' /:-') {
+				date_time_str := time.parse(str) ?
+				return orm.Primitive(date_time_str)
+			}
+
 			timestamp := str.int()
 			return orm.Primitive(time.unix(timestamp))
 		}