Various minor bug fixes (#1707)

## Description
Gathering several small bug fixes:
- Clear the backdrop when manually reloading the home page
- Convert the "# years old" string resource to plural
- Fix a spelling error in the source English strings
- Ensure #1680 is respected when searching for subtitles to download
- Slightly adjust padding for the header in collection details to match
other headers

### Related issues
Fixes string issues reported in
https://github.com/damontecres/Wholphin/issues/1705#issuecomment-4982909931

### Testing
Emulator

## Screenshots
N/A

## AI or LLM usage
None

app/src/main/java/com/github/damontecres/wholphin/ui/components/HiddenFocusBox.kt

@@ -25,7 +25,7 @@ fun HiddenFocusBox(
     modifier =
         Modifier
             .fillMaxWidth()
-            .height(1.dp)
+            .height(0.dp)
             .focusRequester(focusRequester)
             .onFocusChanged {
                 if (it.isFocused) onFocus.invoke()

app/src/main/java/com/github/damontecres/wholphin/ui/detail/PersonPage.kt

@@ -28,6 +28,7 @@ import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.focus.onFocusChanged
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
@@ -503,8 +504,9 @@ fun PersonHeader(
                 val text =
                     if (age != null) {
                         stringResource(R.string.born) + ": ${formatDate(it)} (${
-                            stringResource(
-                                R.string.years_old,
+                            pluralStringResource(
+                                R.plurals.years_old,
+                                age,
                                 age,
                             )
                         })"
@@ -533,8 +535,9 @@ fun PersonHeader(
                 val text =
                     if (age != null) {
                         stringResource(R.string.died) + ": ${formatDate(it)} (${
-                            stringResource(
-                                R.string.years_old,
+                            pluralStringResource(
+                                R.plurals.years_old,
+                                age,
                                 age,
                             )
                         })"

app/src/main/java/com/github/damontecres/wholphin/ui/detail/collection/CollectionDetails.kt

@@ -343,6 +343,7 @@ fun CollectionDetailsContent(
                                 modifier =
                                     Modifier
                                         .padding(
+                                            start = HeaderUtils.startPadding,
                                             top = HeaderUtils.topPadding,
                                             bottom = 8.dp,
                                         ).height(HeaderUtils.height),

app/src/main/java/com/github/damontecres/wholphin/ui/nav/NavDrawer.kt

@@ -432,6 +432,7 @@ fun NavDrawer(
                                     viewModel.setIndex(HOME_INDEX)
                                     if (destination is Destination.Home) {
                                         viewModel.navigationManager.reloadHome()
+                                        onClearBackdrop.invoke()
                                     } else {
                                         viewModel.navigationManager.goToHome()
                                     }

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackViewModel.kt

@@ -181,7 +181,7 @@ class PlaybackViewModel
         private val _state = MutableStateFlow(PlaybackState())
         val state: StateFlow<PlaybackState> = _state
 
-        private lateinit var preferences: UserPreferences
+        internal lateinit var preferences: UserPreferences
         internal lateinit var itemId: UUID
         internal lateinit var currentItem: PlaylistItem
         internal var forceTranscoding: Boolean = false

app/src/main/java/com/github/damontecres/wholphin/ui/playback/SubtitleSearchUtils.kt

@@ -7,6 +7,7 @@ import com.github.damontecres.wholphin.R
 import com.github.damontecres.wholphin.data.model.BaseItem
 import com.github.damontecres.wholphin.data.model.PlaylistItem
 import com.github.damontecres.wholphin.data.model.TrackIndex
+import com.github.damontecres.wholphin.services.getPreferredLanguage
 import com.github.damontecres.wholphin.ui.isNotNullOrBlank
 import com.github.damontecres.wholphin.ui.launchIO
 import com.github.damontecres.wholphin.ui.onMain
@@ -42,15 +43,17 @@ sealed interface SubtitleSearchStatus {
 /**
  * Trigger a search for subtitles in the given language for the currently playing media
  */
-fun PlaybackViewModel.searchForSubtitles(
-    language: String =
-        serverRepository
-            .currentUserDto
-            ?.configuration
-            ?.subtitleLanguagePreference
-            ?.takeIf { it.isNotNullOrBlank() }
-            ?: Locale.current.language,
-) {
+fun PlaybackViewModel.searchForSubtitles(language: String? = null) {
+    val language =
+        language ?: getPreferredLanguage(
+            MediaStreamType.SUBTITLE,
+            preferences,
+            serverRepository
+                .currentUserDto
+                ?.configuration,
+        )?.takeIf { it.isNotNullOrBlank() }
+            ?: Locale.current.language
+
     subtitleSearchState.update {
         it.copy(
             status = SubtitleSearchStatus.Searching,