Doujin.io: only use images as pages (#8152)

src/en/doujinio/build.gradle

@@ -1,7 +1,7 @@
 ext {
     extName = 'Doujin.io - J18'
     extClass = '.Doujinio'
-    extVersionCode = 1
+    extVersionCode = 2
     isNsfw = true
 }
 

src/en/doujinio/src/eu/kanade/tachiyomi/extension/en/doujinio/DoujinioDto.kt

@@ -60,7 +60,10 @@ class Chapter(
 class ChapterMetadata(val identifier: String)
 
 @Serializable
-class ChapterPage(val href: String)
+class ChapterPage(
+    val href: String,
+    val type: String,
+)
 
 @Serializable
 class ChapterManifest(
@@ -68,7 +71,11 @@ class ChapterManifest(
     @SerialName("readingOrder")
     private val pages: List<ChapterPage>,
 ) {
-    fun toPageList() = pages.mapIndexed { i, page ->
+    fun toPageList() =
+        pages
+            .filter { page ->
+                page.type.startsWith("image")
+            }.mapIndexed { i, page ->
                 Page(
                     index = i,
                     url = metadata.identifier,