fix: Adjust scroll from clipping children form fields in AlertDialog from showSourcesDialog (#1782)

lib/ui/views/settings/settingsFragment/settings_manage_sources.dart

@@ -27,6 +27,7 @@ class SManageSources extends BaseViewModel {
     return showDialog(
       context: context,
       builder: (context) => AlertDialog(
+        scrollable: true,
         title: Row(
           children: <Widget>[
             Expanded(
@@ -39,8 +40,7 @@ class SManageSources extends BaseViewModel {
             ),
           ],
         ),
-        content: SingleChildScrollView(
-          child: Column(
+        content: Column(
           children: <Widget>[
             TextField(
               controller: _orgPatSourceController,
@@ -108,7 +108,6 @@ class SManageSources extends BaseViewModel {
             Text(t.settingsView.sourcesUpdateNote),
           ],
         ),
-        ),
         actions: <Widget>[
           TextButton(
             onPressed: () {