fix: wire android_main_activity in Dioxus.toml to custom MainActivity.kt

Agent-Logs-Url: https://github.com/gfauredev/LogOut/sessions/a737d2ea-3836-4f57-8292-4613d92f9ce4

Co-authored-by: gfauredev <19304085+gfauredev@users.noreply.github.com>

Author: Copilot

Dioxus.toml

@@ -1,5 +1,5 @@
 [application]
-# android_main_activity = "android/MainActivity.kt"
+android_main_activity = "android/MainActivity.kt"
 asset_dir = "public"
 # ios_entitlements = ""
 # ios_info_plist = ""