fix sizing (#3298)

lib/new-ui/widgets/currency_picker/currency_picker_sheet.dart

@@ -35,20 +35,23 @@ class CurrencyPickerSheet extends StatelessWidget {
           borderRadius: const BorderRadius.vertical(top: Radius.circular(24)),
           color: colors.surface,
         ),
-        child: Column(
-          mainAxisSize: MainAxisSize.max,
-          children: [
-            ModalTopBar(
-              title: S.of(context).select_asset,
-              leadingIcon: const Icon(Icons.close),
-              onLeadingPressed: () => Navigator.of(context).maybePop(),
-            ),
-            Expanded(
-              child: args.isPreFiltered
-                  ? SingleNetworkCurrencyPicker(args: args)
-                  : MultiNetworkCurrencyPicker(args: args),
-            ),
-          ],
+        child: SafeArea(
+          top: false,
+          child: Column(
+            mainAxisSize: MainAxisSize.max,
+            children: [
+              ModalTopBar(
+                title: S.of(context).select_asset,
+                leadingIcon: const Icon(Icons.close),
+                onLeadingPressed: () => Navigator.of(context).maybePop(),
+              ),
+              Expanded(
+                child: args.isPreFiltered
+                    ? SingleNetworkCurrencyPicker(args: args)
+                    : MultiNetworkCurrencyPicker(args: args),
+              ),
+            ],
+          ),
         ),
       ),
     );

lib/new-ui/widgets/currency_picker/multi_network_currency_picker.dart

@@ -174,7 +174,6 @@ class _MultiNetworkCurrencyPickerState extends State<MultiNetworkCurrencyPicker>
           controller: _searchController,
           hintText: S.of(context).search,
         ),
-        const SizedBox(height: 24),
       ],
     );
   }

lib/new-ui/widgets/currency_picker/single_network_currency_picker.dart

@@ -120,7 +120,6 @@ class _SingleNetworkCurrencyPickerState extends State<SingleNetworkCurrencyPicke
           controller: _searchController,
           hintText: S.of(context).search,
         ),
-        const SizedBox(height: 24),
       ],
     );
   }

lib/src/screens/ur/widgets/urqr.dart

@@ -79,7 +79,7 @@ class _URQRState extends State<URQR> {
               child: QrImage(
                 data: frames[frame % frames.length],
                 version: -1,
-                size: null,
+                size: MediaQuery.of(context).size.width * 0.7,
               ),
             ),
           ),