🔒️(backend) prevent accessing files if they are not ready

With the addition of the ANALYSING state
files could be accessed in the short time they
were in that state.
We now require files to be in ready.

Also adds missing frontend types (no impact).

src/backend/core/admin.py

@@ -177,7 +177,7 @@ class FileAdmin(admin.ModelAdmin):
         "hard_deleted_at",
         "description",
         "malware_detection_info",
-        "is_pending_upload",
+        "is_ready",
         "preview_url",
         "extension",
         "key_base",
@@ -226,7 +226,7 @@ class FileAdmin(admin.ModelAdmin):
             _("Derived info"),
             {
                 "fields": (
-                    "is_pending_upload",
+                    "is_ready",
                     "extension",
                     "key_base",
                     "file_key",
@@ -240,7 +240,7 @@ class FileAdmin(admin.ModelAdmin):
     @admin.display(description=_("File preview"))
     def preview_url(self, obj):
         """Return a clickable preview URL for the file."""
-        if obj.is_pending_upload:
+        if not obj.is_ready:
             return "-"
         url = generate_download_file_url(obj, expires_in=60 * 60)