fix light theme attachment doc UI

stylesheets/_modules.scss

@@ -340,26 +340,23 @@
   text-overflow: ellipsis;
 }
 
+.module-message__generic-attachment__file-size,
+.module-message__generic-attachment__file-name--outgoing,
+.module-message__generic-attachment__file-size--incoming,
+.module-message__generic-attachment__file-size--outgoing,
 .module-message__generic-attachment__file-name--incoming {
-  color: $color-white;
+  @include themify($themes) {
+    color: themed('textColor');
+  }
 }
 
 .module-message__generic-attachment__file-size {
-  color: $color-gray-90;
   font-size: 11px;
   line-height: 16px;
   letter-spacing: 0.3px;
   margin-top: 3px;
 }
 
-.module-message__generic-attachment__file-size--incoming {
-  color: $color-white;
-}
-
-.module-message__generic-attachment__file-size--incoming {
-  color: $color-white;
-}
-
 .module-message__link-preview {
   cursor: pointer;
   margin-inline-start: -12px;

stylesheets/_theme_dark.scss

@@ -365,26 +365,6 @@
     color: $color-dark-05;
   }
 
-  .module-message__broken-video-screenshot--incoming {
-    color: $color-white;
-  }
-
-  .module-message__generic-attachment__file-name {
-    color: $color-dark-05;
-  }
-
-  .module-message__generic-attachment__file-name--incoming {
-    color: $color-white;
-  }
-
-  .module-message__generic-attachment__file-size {
-    color: $color-dark-05;
-  }
-
-  .module-message__generic-attachment__file-size--incoming {
-    color: $color-white;
-  }
-
   .module-message__link-preview__content {
     background-color: $color-gray-95;
     border: 1px solid $color-gray-60;