Bug 1975980 - add preferences modified by many tests to testing/mochitest/ignorePrefs.json, r=jmaher.

Differential Revision: https://phabricator.services.mozilla.com/D256280

Author: fqueze

testing/mochitest/ignorePrefs.json

@@ -1,34 +1,68 @@
 [
   "app.normandy.first_run",
-  "app.update.lastUpdateTime.addon-background-update-timer",
-  "app.update.lastUpdateTime.background-update-timer",
-  "app.update.lastUpdateTime.browser-cleanup-thumbnails",
-  "app.update.lastUpdateTime.region-update-timer",
-  "app.update.lastUpdateTime.search-engine-update-timer",
-  "app.update.lastUpdateTime.services-settings-poll-changes",
-  "app.update.lastUpdateTime.xpi-signature-verification",
+  "app.normandy.user_id",
+  "app.update.background.rolledout",
+  "app.update.interval",
+  "app.update.lastUpdateTime.*",
   "browser.bookmarks.restore_default_bookmarks",
   "browser.contentblocking.category",
-  "browser.newtabpage.pinned",
+  "browser.download.lastDir",
+  "browser.firefox-view.view-count",
+  "browser.newtabpage.activity-stream.discoverystream.endpointSpocsClear",
+  "browser.newtabpage.activity-stream.feeds.system.topsites",
+  "browser.newtabpage.activity-stream.feeds.topsites",
   "browser.newtabpage.activity-stream.improvesearch.topSiteSearchShortcuts.havePinned",
+  "browser.newtabpage.pinned",
   "browser.newtabpage.storageVersion",
   "browser.pageActions.persistedActions",
+  "browser.policies.alternatePath",
+  "browser.preferences.experimental.hidden",
+  "browser.search.totalSearches",
+  "browser.toolbars.bookmarks.visibility",
+  "browser.uiCustomization.horizontalTabsBackup",
+  "browser.uiCustomization.navBarWhenVerticalTabs",
   "browser.uiCustomization.state",
   "browser.urlbar.placeholderName",
   "browser.urlbar.placeholderName.private",
+  "browser.urlbar.recentsearches.lastDefaultChanged",
+  "datareporting.dau.cachedUsageProfileGroupID",
+  "datareporting.dau.cachedUsageProfileID",
   "doh-rollout.doneFirstRun",
   "doh-rollout.home-region",
+  "dom.security.https_only_mode_ever_enabled",
   "extensions.databaseSchema",
+  "extensions.pendingOperations",
+  "extensions.ui.dictionary.hidden",
+  "extensions.ui.extension.hidden",
+  "extensions.ui.lastCategory",
+  "extensions.ui.locale.hidden",
+  "extensions.ui.mlmodel.hidden",
+  "extensions.ui.sitepermission.hidden",
   "extensions.webextensions.ExtensionStorageIDB.migrated.*",
-  "media.gmp.storage.version.observed",
   "media.gmp-manager.buildID",
   "media.gmp-manager.lastCheck",
   "media.gmp-manager.lastEmptyCheck",
+  "media.gmp.storage.version.observed",
+  "pdfjs.enableAltText",
+  "pdfjs.enableAltTextForEnglish",
+  "pdfjs.enabledCache.state",
   "places.frecency.accelerateRecalculation",
+  "privacy.clearOnShutdown_v2.formdata",
+  "privacy.sanitize.clearOnShutdown.hasMigratedToNewPrefs3",
+  "privacy.trackingprotection.allow_list.baseline.enabled",
+  "privacy.trackingprotection.allow_list.convenience.enabled",
   "privacy.trackingprotection.allow_list.hasMigratedCategoryPrefs",
   "security.webauthn.show_ms_settings_link",
+  "services.sync.clients.lastSync",
+  "services.sync.declinedEngines",
+  "services.sync.globalScore",
+  "services.sync.nextSync",
+  "sidebar.main.tools",
+  "sidebar.new-sidebar.has-used",
+  "sidebar.old-sidebar.has-used",
   "toolkit.startup.last_success",
   "toolkit.telemetry.cachedClientID",
   "toolkit.telemetry.cachedProfileGroupID",
+  "trailhead.firstrun.didSeeAboutWelcome",
   "ui.osk.debug.keyboardDisplayReason"
 ]