Revert "Revert "ignore #0 at ceval client level""

This reverts commit 603f5d9144.

https://lichess.org/forum/lichess-feedback/mate-in-zero

ui/ceval/src/stockfishProtocol.ts

@@ -64,6 +64,9 @@ export default class Protocol {
         elapsedMs: number = parseInt(matches[7]),
         moves = matches[8].split(' ');
 
+    // Sometimes we get #0. Let's just skip it.
+    if (isMate && !ev) return;
+
     // Track max pv index to determine when pv prints are done.
     if (this.expectedPvs < multiPv) this.expectedPvs = multiPv;