TF-3416 Implement preview EML attachment

pubspec.lock

@@ -1021,6 +1021,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
+  flutter_smart_dialog:
+    dependency: "direct main"
+    description:
+      name: flutter_smart_dialog
+      sha256: d7b915461fdc9bb8111d23a709b4ce910dbc4b9bef0fbd941655f74bf7de09a6
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.9.8+5"
   flutter_staggered_grid_view:
     dependency: "direct main"
     description:
@@ -1337,14 +1345,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.1"
-  loading_view:
-    dependency: transitive
-    description:
-      name: loading_view
-      sha256: "3d31c2c5293c2e3518b7330ffdc2fab5c83daaa9218cc45d4406c875f08f0795"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.1.0"
   logging:
     dependency: transitive
     description:
@@ -2023,14 +2023,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.1"
-  tip_dialog:
-    dependency: "direct main"
-    description:
-      name: tip_dialog
-      sha256: edc1ebbb4b9f9575220c85206cf6986921c2b63d173744be0babac00c2e48bd0
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.0.0"
   typed_data:
     dependency: transitive
     description: