fix: bootloader device card persistence fix

lib/pages/devices_tab_page.dart

@@ -47,6 +47,7 @@ class _DevicesTabPageState extends ConsumerState<DevicesTabPage> {
       return;
     }
     _isBootloaderScanStarting = true;
+    _clearBootloaderDevice();
 
     try {
       final bluetooth = await ref.read(bluetoothProvider.future);
@@ -83,7 +84,16 @@ class _DevicesTabPageState extends ConsumerState<DevicesTabPage> {
           (device) => device != null && _isBootloaderAdvertisement(device),
           orElse: () => null,
         );
-    if (!mounted || dfuDevice == null || dfuDevice.id == _dfuDevice?.id) {
+    if (!mounted) {
+      return;
+    }
+
+    if (dfuDevice == null) {
+      _clearBootloaderDevice();
+      return;
+    }
+
+    if (dfuDevice.id == _dfuDevice?.id) {
       return;
     }
 
@@ -92,6 +102,16 @@ class _DevicesTabPageState extends ConsumerState<DevicesTabPage> {
     });
   }
 
+  void _clearBootloaderDevice() {
+    if (!mounted || _dfuDevice == null) {
+      return;
+    }
+
+    setState(() {
+      _dfuDevice = null;
+    });
+  }
+
   bool _isBootloaderAdvertisement(DiscoveredDevice device) {
     final name = device.name.trim();
     if (name == 'US-DFU' || name == 'UniversalShifters DFU') {
@@ -126,6 +146,7 @@ class _DevicesTabPageState extends ConsumerState<DevicesTabPage> {
     if (!mounted) {
       return;
     }
+    _clearBootloaderDevice();
     context.push(
       '/bootloader_recovery_update',
       extra: BootloaderRecoveryUpdateArgs(