Refactor BundleColumnError to TS (#39177)

app/javascript/styles/mastodon/components.scss

@@ -3374,8 +3374,7 @@ a.account__display-name {
 
     .column-header,
     .column-back-button,
-    .scrollable,
-    .error-column {
+    .scrollable {
       border-radius: 0 !important;
     }
 
@@ -5288,51 +5287,6 @@ a.status-card {
   margin-bottom: 0;
 }
 
-.error-column {
-  padding: 20px;
-  border: 1px solid var(--color-border-primary);
-  border-radius: 4px;
-  display: flex;
-  flex: 1 1 auto;
-  align-items: center;
-  justify-content: center;
-  flex-direction: column;
-  cursor: default;
-
-  &__image {
-    width: 70%;
-    max-width: 350px;
-    margin-top: -50px;
-  }
-
-  &__message {
-    text-align: center;
-    color: var(--color-text-secondary);
-    font-size: 15px;
-    line-height: 22px;
-
-    h1 {
-      font-size: 28px;
-      line-height: 33px;
-      font-weight: 700;
-      margin-bottom: 15px;
-      color: var(--color-text-primary);
-    }
-
-    p {
-      max-width: 48ch;
-    }
-
-    &__actions {
-      margin-top: 30px;
-      display: flex;
-      gap: 10px;
-      align-items: center;
-      justify-content: center;
-    }
-  }
-}
-
 @keyframes heartbeat {
   0% {
     transform: scale(1);