Fix two UI issues (#856)

## Description
Fixes UI issues:
- Showing unplayed corner text on multi-part movies
- Fix duplicate or missing rating info on discover movie & series pages

### Related issues
N/A

### Testing
Emulator

## Screenshots
N/A

## AI or LLM usage
None

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

@@ -167,19 +167,19 @@ fun listToDotString(
         strings.forEachIndexed { index, string ->
             append(string)
             if (index != strings.lastIndex) dot()
-            communityRating?.let {
-                dot()
-                append(String.format(Locale.getDefault(), "%.1f", it))
-                appendInlineContent(id = "star")
-            }
-            criticRating?.let {
-                dot()
-                append("${it.toInt()}%")
-                if (it >= 60f) {
-                    appendInlineContent(id = "fresh")
-                } else {
-                    appendInlineContent(id = "rotten")
-                }
+        }
+        communityRating?.let {
+            dot()
+            append(String.format(Locale.getDefault(), "%.1f", it))
+            appendInlineContent(id = "star")
+        }
+        criticRating?.let {
+            dot()
+            append("${it.toInt()}%")
+            if (it >= 60f) {
+                appendInlineContent(id = "fresh")
+            } else {
+                appendInlineContent(id = "rotten")
             }
         }
     }

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

@@ -65,7 +65,7 @@ fun DiscoverMovieDetailsHeader(
         ) {
             val padding = 4.dp
             val details =
-                remember(movie) {
+                remember(movie, rating) {
                     buildList {
                         movie.releaseDate?.let(::add)
                         movie.runtime
@@ -89,6 +89,7 @@ fun DiscoverMovieDetailsHeader(
                             ?.releaseDates
                             ?.firstOrNull()
                             ?.certification
+                            ?.takeIf { it.isNotNullOrBlank() }
                             ?.let(::add)
                     }.let {
                         listToDotString(

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

@@ -463,7 +463,7 @@ fun DiscoverSeriesDetailsHeader(
         ) {
             val padding = 4.dp
             val details =
-                remember(series) {
+                remember(series, rating) {
                     buildList {
                         series.firstAirDate?.let(::add)
                         series.episodeRunTime

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

@@ -326,7 +326,7 @@ fun HomePageContent(
                                             name = item?.data?.seriesName ?: item?.name,
                                             item = item,
                                             aspectRatio = AspectRatios.TALL,
-                                            cornerText = item?.ui?.episdodeUnplayedCornerText,
+                                            cornerText = item?.ui?.episodeUnplayedCornerText,
                                             played = item?.data?.userData?.played ?: false,
                                             favorite = item?.favorite ?: false,
                                             playPercent =