Add id to Translog.Delete#toString()

The assertion failure message in elastic#72735 did not indicate why it failed
because `Translog.Delete#toString()` does not expose all the fields of
the problematic operation. This commit adds the missing `id` and `type`
fields.

Backport of elastic#72752 to 7.x

server/src/main/java/org/elasticsearch/index/translog/Translog.java

@@ -1397,7 +1397,9 @@ public int hashCode() {
         @Override
         public String toString() {
             return "Delete{" +
-                "uid=" + uid +
+                "id=" + id +
+                ", type=" + type +
+                ", uid=" + uid +
                 ", seqNo=" + seqNo +
                 ", primaryTerm=" + primaryTerm +
                 ", version=" + version +