android: proper hiding keyboard when entering passcode (#4066)

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

@@ -13,7 +13,7 @@ expect fun LocalMultiplatformView(): Any?
 
 @Composable
 expect fun getKeyboardState(): State<KeyboardState>
-expect fun hideKeyboard(view: Any?)
+expect fun hideKeyboard(view: Any?, clearFocus: Boolean = false)
 
 expect fun androidIsFinishingMainActivity(): Boolean
 

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/localauth/PasscodeView.kt

@@ -135,7 +135,9 @@ fun PasscodeView(
   if (!buttonsEnabled.value) {
     ProgressIndicator()
   }
+  val view = LocalMultiplatformView()
   LaunchedEffect(Unit) {
+    hideKeyboard(view, true)
     focusRequester.requestFocus()
     // Disallow to steal a focus by clicking on buttons or using Tab
     focusRequester.captureFocus()