add m.location support

Needs cross-platform testing. Currently only tested on Android.

lib/helpers/extensions/build_event_options.dart

@@ -173,7 +173,9 @@ extension BuildEventOptions on Event {
           ),
         ),
 
-      if (content is MessageContent && sender == userId)
+      if (content is MessageContent &&
+          content is! LocationMessageContent &&
+          sender == userId)
         PopupMenuItem(
           onTap: () => onRelation(rowId, .edit),
           child: const ListTile(leading: Icon(Icons.edit), title: Text("Edit")),

lib/helpers/extensions/show_adaptive_sheet.dart

@@ -4,7 +4,10 @@ import "package:nexus/helpers/extensions/is_desktop.dart";
 extension ShowAdaptiveSheet on BuildContext {
   /// Shows the widget from [builder] in a dialog on desktop, or a bottom sheet
   /// on mobile. Use the context passed to [builder] to close it.
-  Future<T?> showAdaptiveSheet<T>(WidgetBuilder builder) => isDesktop
+  Future<T?> showAdaptiveSheet<T>(
+    WidgetBuilder builder, {
+    bool enableDrag = true,
+  }) => isDesktop
       ? showDialog<T>(
           context: this,
           builder: (context) => Dialog(
@@ -18,6 +21,7 @@ extension ShowAdaptiveSheet on BuildContext {
       : showModalBottomSheet<T>(
           context: this,
           isScrollControlled: true,
+          enableDrag: enableDrag,
           constraints: .new(maxHeight: MediaQuery.sizeOf(this).height - 80),
           builder: (context) => SafeArea(child: builder(context)),
         );