fix: Prevent memory leak in WidgetConfigurationActivity

Uses the application context instead of the activity context when updating the widget. This avoids leaking the activity instance if the update operation outlives the configuration screen.

app/src/main/java/eu/darken/capod/main/ui/widget/WidgetConfigurationActivity.kt

@@ -1,12 +1,14 @@
 package eu.darken.capod.main.ui.widget
 
 import android.appwidget.AppWidgetManager
+import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import androidx.activity.enableEdgeToEdge
 import androidx.activity.viewModels
 import androidx.core.view.isVisible
 import dagger.hilt.android.AndroidEntryPoint
+import dagger.hilt.android.qualifiers.ApplicationContext
 import eu.darken.capod.R
 import eu.darken.capod.common.EdgeToEdgeHelper
 import eu.darken.capod.common.debug.logging.log
@@ -24,6 +26,7 @@ class WidgetConfigurationActivity : Activity2() {
 
     @Inject lateinit var profileAdapter: WidgetProfileSelectionAdapter
     @Inject lateinit var upgradeRepo: UpgradeRepo
+    @ApplicationContext @Inject lateinit var appContext: Context
 
     private var widgetId: Int = AppWidgetManager.INVALID_APPWIDGET_ID
 
@@ -101,10 +104,10 @@ class WidgetConfigurationActivity : Activity2() {
         val resultValue = Intent().putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetId)
         setResult(RESULT_OK, resultValue)
 
-        val appWidgetManager = AppWidgetManager.getInstance(this@WidgetConfigurationActivity)
+        val appWidgetManager = AppWidgetManager.getInstance(appContext)
 
         WidgetProvider.updateWidget(
-            context = this@WidgetConfigurationActivity,
+            context = appContext,
             appWidgetManager = appWidgetManager,
             widgetId = widgetId
         )