Pixiv: fix chapter dates (#17289)

src/all/pixiv/build.gradle

@@ -6,7 +6,7 @@ ext {
     extName = 'Pixiv'
     pkgNameSuffix = 'all.pixiv'
     extClass = '.PixivFactory'
-    extVersionCode = 5
+    extVersionCode = 6
     isNsfw = true
 }
 

src/all/pixiv/src/eu/kanade/tachiyomi/extension/all/pixiv/Pixiv.kt

@@ -348,7 +348,7 @@ class Pixiv(override val lang: String) : HttpSource() {
             SChapter.create().apply {
                 setUrlWithoutDomain("/artworks/${illust.id!!}")
                 name = illust.title ?: "(null)"
-                date_upload = illust.upload_timestamp ?: 0
+                date_upload = (illust.upload_timestamp ?: 0) * 1000
                 chapter_number = i.toFloat()
             }
         }