Fix the keystore cache file name (#20575)

Author: msJinLei

src/Accounts/Authentication/AzureSessionInitializer.cs

@@ -268,7 +268,7 @@ static IAzureSession CreateInstance(IDataStore dataStore = null, Action<string>
             session.ARMProfileFile = autoSave.ContextFile;
             session.TokenCacheDirectory = autoSave.CacheDirectory;
             session.TokenCacheFile = autoSave.CacheFile;
-            session.KeyStoreFile = "azkeystore.cache";
+            session.KeyStoreFile = "keystore.cache";
             autoSave.Settings.TryGetValue("InstallationId", out string installationId);
             session.ExtendedProperties.Add("InstallationId", installationId);
             InitializeConfigs(session, profilePath, writeWarning);