feat: Make sure to enable animations and spaces when running PGO testings, b=no-bug, c=common, workspaces

src/browser/components/tabbrowser/content/tabbrowser-js.patch

@@ -1,5 +1,5 @@
 diff --git a/browser/components/tabbrowser/content/tabbrowser.js b/browser/components/tabbrowser/content/tabbrowser.js
-index 0eaca7a58e0026237b71b2ad515efe84d9e8c779..f3966d85049735538b24424f42d4a690eaf7bbec 100644
+index 0eaca7a58e0026237b71b2ad515efe84d9e8c779..64b6fc581be1791ef9a750e03ab9a91c92325be3 100644
 --- a/browser/components/tabbrowser/content/tabbrowser.js
 +++ b/browser/components/tabbrowser/content/tabbrowser.js
 @@ -398,6 +398,7 @@
@@ -591,7 +591,7 @@ index 0eaca7a58e0026237b71b2ad515efe84d9e8c779..f3966d85049735538b24424f42d4a690
          Glean.browserTabclose.timeAnim.cancel(aTab._closeTimeAnimTimerId);
          aTab._closeTimeAnimTimerId = null;
 -        this._endRemoveTab(aTab);
-+        if (animate && !gReduceMotion && !gZenUIManager.testingEnabled) {
++        if (animate && !gReduceMotion && !(gZenUIManager.testingEnabled && !gZenUIManager.profilingEnabled)) {
 +          gZenVerticalTabsManager.animateTabClose(aTab, (animate && !gReduceMotion)).then(() => {
 +            this._endRemoveTab(aTab);
 +          });

src/zen/common/modules/ZenUIManager.mjs

@@ -10,6 +10,7 @@ window.gZenUIManager = {
   _hoverPausedForExpand: false,
   _hasLoadedDOM: false,
   testingEnabled: Services.prefs.getBoolPref('zen.testing.enabled', false),
+  profilingEnabled: Services.prefs.getBoolPref('zen.testing.profiling.enabled', false),
 
   _lastClickPosition: null,
 
@@ -857,7 +858,9 @@ window.gZenVerticalTabsManager = {
       !aItem ||
       !gZenUIManager._hasLoadedDOM ||
       !aItem.isConnected ||
-      gZenUIManager.testingEnabled ||
+      // We do want to do some animations during testing with profiling enabled
+      // so we can capture and improve them.
+      (gZenUIManager.testingEnabled && !gZenUIManager.profilingEnabled) ||
       !gZenStartup.isReady ||
       aItem.group?.hasAttribute('split-view-group')
     ) {

src/zen/workspaces/ZenWorkspaces.mjs

@@ -777,12 +777,7 @@ class nsZenWorkspaces {
   }
 
   get workspaceEnabled() {
-    if (typeof this._workspaceEnabled === 'undefined') {
-      this._workspaceEnabled =
-        this.shouldHaveWorkspaces &&
-        !Services.prefs.getBoolPref('zen.testing.profiling.enabled', false);
-    }
-    return this._workspaceEnabled && !window.closed;
+    return this.shouldHaveWorkspaces && !window.closed;
   }
 
   getActiveWorkspaceFromCache() {