make Storage store where it came from

compiler/constrain/src/pattern.rs

@@ -271,7 +271,7 @@ pub fn constrain_pattern(
             let whole_con = Constraint::Eq(
                 Type::Variable(*whole_var),
                 Expected::NoExpectation(record_type),
-                Category::Storage,
+                Category::Storage(std::file!(), std::line!()),
                 region,
             );
 
@@ -315,7 +315,7 @@ pub fn constrain_pattern(
                     vec![(tag_name.clone(), argument_types)],
                     Box::new(Type::Variable(*ext_var)),
                 )),
-                Category::Storage,
+                Category::Storage(std::file!(), std::line!()),
                 region,
             );