Add initial image DM copy to clipboard

lib/screens/message_thread_screen.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:relatica/utils/clipboard_utils.dart';
 import 'package:result_monad/result_monad.dart';
 
 import '../controls/image_control.dart';
@@ -68,6 +69,9 @@ class _MessageThreadScreenState extends State<MessageThreadScreen> {
                           ? null
                           : () =>
                               service.markMessageRead(widget.parentThreadId, m),
+                      onLongPress: () async {
+                        await copyToClipboard(context: context, text: m.text);
+                      },
                       leading: ImageControl(
                         imageUrl: imageUrl,
                         iconOverride: const Icon(Icons.person),
@@ -98,7 +102,7 @@ class _MessageThreadScreenState extends State<MessageThreadScreen> {
                   labelText: 'Reply Text',
                   border: OutlineInputBorder(
                     borderSide: BorderSide(
-                      color: Theme.of(context).backgroundColor,
+                      color: Theme.of(context).colorScheme.background,
                     ),
                     borderRadius: BorderRadius.circular(5.0),
                   ),