make scam alert text scrollable

Signed-off-by: Sahil Yeole <sahilyeole93@gmail.com>

flutter/lib/mobile/pages/server_page.dart

@@ -328,7 +328,11 @@ class _ScamWarningDialogState extends State<ScamWarningDialog> {
               ),
             ),
             SizedBox(height: 18),
-            Text(
+            SizedBox(
+              height: 250,
+              child: Scrollbar(
+                child: SingleChildScrollView(
+                  child: Text(
                       translate("scam_text1")+"\n\n"
                       +translate("scam_text2")+"\n",
                       style: TextStyle(
@@ -337,6 +341,9 @@ class _ScamWarningDialogState extends State<ScamWarningDialog> {
                         fontSize: 16.0,
                       ),
                   ),
+                ),
+              ),
+            ),
             Row(
               children: <Widget>[
                 Checkbox(