android, desktop: run with stopped chat (#3624)

* android, desktop: run with stopped chat

* way to prevent starting a chat in case of not saved database key

* rename

* change position of a call

* new way of doing the same

* better

* exit process

---------

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

apps/multiplatform/common/src/androidMain/kotlin/chat/simplex/common/platform/UI.android.kt

@@ -97,12 +97,14 @@ actual class GlobalExceptionsHandler: Thread.UncaughtExceptionHandler {
       mainActivity.get()?.recreate()
     } else {
       mainActivity.get()?.apply {
-        window
-          ?.decorView
-          ?.findViewById<ViewGroup>(android.R.id.content)
-          ?.removeViewAt(0)
-        setContent {
-          AppScreen()
+        runOnUiThread {
+          window
+            ?.decorView
+            ?.findViewById<ViewGroup>(android.R.id.content)
+            ?.removeViewAt(0)
+          setContent {
+            AppScreen()
+          }
         }
       }
     }