Bug 1729519 - Correct amount of places.sqlite-wal read and writes to cover...

Bug 1729519 - Correct amount of places.sqlite-wal read and writes to cover correct amounts after bug 1727783. r=mak

Differential Revision: https://phabricator.services.mozilla.com/D125064

browser/base/content/test/performance/browser_startup_mainthreadio.js

@@ -486,8 +486,8 @@ const startupPhases = {
       ignoreIfUnused: true,
       stat: 4,
       fsync: 3,
-      read: 44,
-      write: 173,
+      read: 47,
+      write: 170,
     },
     {
       // bug 1391590