Change type repr to short name (#5788)

crates/typst-library/src/foundations/ty.rs

@@ -136,7 +136,7 @@ impl Repr for Type {
         } else if *self == Type::of::<NoneValue>() {
             "type(none)"
         } else {
-            self.long_name()
+            self.short_name()
         }
         .into()
     }

tests/suite/foundations/repr.typ

@@ -37,8 +37,8 @@
 #t(() => none, `(..) => ..`)
 
 // Types.
-#t(int, `integer`)
-#t(type("hi"), `string`)
+#t(int, `int`)
+#t(type("hi"), `str`)
 #t(type((a: 1)), `dictionary`)
 
 // Constants.