[PM-27757] init new apps state (#17200)

* feat(dirt): add "needs review" state for applications needing initial review

- Add showNeedsReviewState to display warning when all apps lack review dates
- Track noAppsHaveReviewDate flag to identify unreviewed applications
- Add i18n strings for organization items count and review prompt
- Update activity card to show 3 states: all caught up, needs review, new apps
- Apply tw-col-span-2 to needs review card for better visibility

* refactor: split activity card states into separate @if blocks for readability

* fix: set hasLoadedApplicationData when summary data arrives

Previously, hasLoadedApplicationData was only set in the enrichedReportData$
subscription, which fired after reportSummary$ and newApplications$. This
caused a timing issue where showNeedsReviewState would remain false even when
newApplicationsCount === totalApplicationCount because the flag wasn't set yet.

Now we set hasLoadedApplicationData=true as soon as reportSummary$ arrives
with totalApplicationCount > 0, ensuring proper synchronization.

---------

Co-authored-by: Tom <ttalty@bitwarden.com>

apps/web/src/locales/en/messages.json

@@ -373,6 +373,21 @@
   "noNewApplicationsToReviewAtThisTime": {
     "message": "No new applications to review at this time"
   },
+  "organizationHasItemsSavedForApplications": {
+    "message": "Your organization has items saved for $COUNT$ applications",
+    "placeholders": {
+      "count": {
+        "content": "$1",
+        "example": "310"
+      }
+    }
+  },
+  "reviewApplicationsToSecureItems": {
+    "message": "Review applications to secure the items most critical to your organization's security"
+  },
+  "reviewApplications": {
+    "message": "Review applications"
+  },
   "prioritizeCriticalApplications": {
     "message": "Prioritize critical applications"
   },