fix: Create chat dialog crashes sometimes and power level textfield does not validate input

assets/l10n/intl_en.arb

@@ -2533,5 +2533,6 @@
     "placeholders": {
         "seconds": {}
     }
-  }
+  },
+  "pleaseEnterANumber": "Please enter a number greater than 0"
 }

lib/pages/user_bottom_sheet/user_bottom_sheet.dart

@@ -34,7 +34,7 @@ class LoadProfileBottomSheet extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return FutureBuilder<ProfileInformation>(
-      future: Matrix.of(context)
+      future: Matrix.of(outerContext)
           .client
           .getUserProfile(userId)
           .timeout(const Duration(seconds: 3)),
@@ -138,7 +138,7 @@ class UserBottomSheetController extends State<UserBottomSheet> {
         if (reason == null || reason.single.isEmpty) return;
         final result = await showFutureLoadingDialog(
           context: context,
-          future: () => Matrix.of(context).client.reportContent(
+          future: () => Matrix.of(widget.outerContext).client.reportContent(
                 user.roomId!,
                 user.eventId,
                 reason: reason.single,
@@ -203,7 +203,7 @@ class UserBottomSheetController extends State<UserBottomSheet> {
       case UserBottomSheetAction.message:
         final roomIdResult = await showFutureLoadingDialog(
           context: context,
-          future: () => Matrix.of(context)
+          future: () => Matrix.of(widget.outerContext)
               .client
               .startDirectChat(user?.id ?? widget.profile!.userId),
         );
@@ -215,7 +215,7 @@ class UserBottomSheetController extends State<UserBottomSheet> {
         if (await askConfirmation()) {
           await showFutureLoadingDialog(
             context: context,
-            future: () => Matrix.of(context)
+            future: () => Matrix.of(widget.outerContext)
                 .client
                 .ignoreUser(user?.id ?? widget.profile!.userId),
           );

lib/widgets/permission_slider_dialog.dart

@@ -61,6 +61,16 @@ Future<int?> showPermissionChooser(
             initialText: currentLevel.toString(),
             keyboardType: TextInputType.number,
             autocorrect: false,
+            validator: (text) {
+              if (text == null) {
+                return L10n.of(context)!.pleaseEnterANumber;
+              }
+              final level = int.tryParse(text);
+              if (level == null || level < 0) {
+                return L10n.of(context)!.pleaseEnterANumber;
+              }
+              return null;
+            },
           ),
         ],
       );