Bug 1959563 - Disable quota info cache before performing dom/quota/test/xpcshell/test_initTemporaryStorage.js; r=dom-storage-reviewers,jstutte

This test currently perma-fails when using a conditioned profile. The failure
occurs because a conditioned profile includes a valid quota info cache.
Consequently, temporary storage initialization skips a full scan and relies on
the cache instead. However, since the cache can be disabled, the test can still
verify metadata restoration by forcing a full scan.

Differential Revision: https://phabricator.services.mozilla.com/D245530

dom/quota/test/xpcshell/test_initTemporaryStorage.js

@@ -14,6 +14,10 @@ async function testSteps() {
   const originDirPath = "storage/default/https+++foo.example.com";
   const metadataFileName = ".metadata-v2";
 
+  info("Setting prefs");
+
+  Services.prefs.setBoolPref("dom.quotaManager.loadQuotaFromCache", false);
+
   info("Initializing");
 
   let request = init();