feat: Attachments view (#7156)

* feat: Attachments view with key shortcuts and dynamically updates when user delete or sent new attachments

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/assets/scss/widgets/_conversation-view.scss

@@ -29,13 +29,13 @@
     }
 
     .modal-image {
-      max-height: 90%;
-      max-width: 90%;
+      max-height: 80vh;
+      max-width: 80vw;
     }
 
     .modal-video {
-      max-height: 75vh;
-      max-width: 100%;
+      max-height: 80vh;
+      max-width: 80vw;
     }
 
     &::before {
@@ -53,16 +53,6 @@
       width: 100%;
     }
   }
-
-  .video {
-    .modal-container {
-      width: auto;
-
-      .modal--close {
-        z-index: var(--z-index-low);
-      }
-    }
-  }
 }
 
 .conversations-list-wrap {
@@ -400,4 +390,3 @@
     margin-bottom: 0;
   }
 }
-