suggestions work again, improve error reporting

src/component/expr/LambdaBlock.tsx

@@ -71,10 +71,7 @@ export function LambdaBlock({state, setState, score}: LambdaBlockProps) {
           state={state.expr}
           setState={setExpr}
           onCancel={() => setState(state => state.expr)}
-          score={(s) => {
-            // console.log('suggestionPriority of lambdaInner... just passing through');
-            return score(s);
-          }}
+          score={suggestion => score({...state, expr: suggestion})}
           />
       </EnvContext>
     </div>