fix(android): a chooser in the player no longer closes on its own

The episode, track, speed, chapter and sleep choosers and the More menu
live inside the player's controls, and the controls hide four seconds
after they come up while the video plays. Hiding them took the open
chooser with them, so a sheet being picked from closed at what looked
like random. The controls now hold still while a chooser is open.

android/app/src/main/java/io/narl/protonstream/playback/PlayerScreen.kt

@@ -477,8 +477,12 @@ fun PlayerScreen(
     // four seconds after it is reached cannot be found again.
     val exploring = rememberTouchExploration()
     LaunchedEffect(exploring) { if (exploring) showControls = true }
-    LaunchedEffect(showControls, state.paused, exploring) {
-        if (showControls && !state.paused && !exploring) {
+    // A chooser open over the controls. They hold still under it: the
+    // choosers live inside the controls, so hiding them closed whatever was
+    // being picked from, four seconds after the controls came up.
+    var picking by remember { mutableStateOf(false) }
+    LaunchedEffect(showControls, state.paused, exploring, picking) {
+        if (showControls && !state.paused && !exploring && !picking) {
             delay(CONTROLS_SECONDS * 1_000)
             showControls = false
         }
@@ -698,6 +702,7 @@ fun PlayerScreen(
                 landscapeLocked = landscapeLocked,
                 media = key,
                 sleep = sleep,
+                onPicking = { picking = it },
                 onLock = {
                     locked = true
                     showControls = false
@@ -949,6 +954,7 @@ private fun PlayerControls(
     landscapeLocked: Boolean,
     media: String,
     sleep: SleepTimer?,
+    onPicking: (Boolean) -> Unit,
     onLock: () -> Unit,
 ) {
     val scope = rememberCoroutineScope()
@@ -957,6 +963,10 @@ private fun PlayerControls(
     var showEpisodes by remember { mutableStateOf(false) }
     var showChapters by remember { mutableStateOf(false) }
     var showSpeeds by remember { mutableStateOf(false) }
+    var more by remember { mutableStateOf(false) }
+    val picking = more || showSleep || choosing != null || showEpisodes || showChapters || showSpeeds
+    LaunchedEffect(picking) { onPicking(picking) }
+    DisposableEffect(Unit) { onDispose { onPicking(false) } }
     // What the store says, so the dialog opens on the rate that is playing.
     var speed by remember { mutableStateOf(1.0) }
     LaunchedEffect(Unit) {
@@ -1037,7 +1047,6 @@ private fun PlayerControls(
             Row(verticalAlignment = Alignment.CenterVertically) {
                 if (!roomForAll) {
                     CompactIcon(Icons.Default.Subtitles, "Subtitles") { choosing = "sub" }
-                    var more by remember { mutableStateOf(false) }
                     Box {
                         CompactIcon(Icons.Default.MoreVert, "More") { more = true }
                         DropdownMenu(expanded = more, onDismissRequest = { more = false }) {