potentially fixed the 'result data does not make sense' error

src/js/script.js

@@ -2681,6 +2681,7 @@ function startTest() {
   }
   testActive = true;
   TestStats.setStart(performance.now());
+  TestStats.resetKeypressTimings();
   restartTimer();
   showTimer();
   $("#liveWpm").text("0");

src/js/test/test-stats.js

@@ -180,6 +180,19 @@ export function setKeypressSpacing(val) {
   keypressTimings.spacing.current = val;
 }
 
+export function resetKeypressTimings() {
+  keypressTimings = {
+    spacing: {
+      current: -1,
+      array: [],
+    },
+    duration: {
+      current: -1,
+      array: [],
+    },
+  };
+}
+
 export function pushMissedWord(word) {
   if (!Object.keys(missedWords).includes(word)) {
     missedWords[word] = 1;