Remove some ZalsaDatabase::zalsa calls

Instead pass around `&Zalsa` to callers more to reduce dynamic dispatch, in most of these cases the functions are only called once so the compiler should have enough knowledge to make the extra argument passing virtually free

src/function/execute.rs

@@ -79,7 +79,7 @@ where
         // old value.
         if let Some(old_memo) = &opt_old_memo {
             self.backdate_if_appropriate(old_memo, &mut revisions, &value);
-            self.diff_outputs(db, database_key_index, old_memo, &mut revisions);
+            self.diff_outputs(zalsa, db, database_key_index, old_memo, &mut revisions);
         }
 
         tracing::debug!("{database_key_index:?}: read_upgrade: result.revisions = {revisions:#?}");