fix: count local feed episodes as downloaded in subscription counter (#8500)

### Description

Local folder feeds have no download records since files are placed
directly on-device. The subscription counter showed 0 downloaded episodes even
when episodes existed in the folder.

Fixes #7534

### Checklist
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net/download/service/src/main/java/de/danoeh/antennapod/net/download/service/episode/autodownload/APCleanupAlgorithm.java

@@ -19,6 +19,7 @@ import de.danoeh.antennapod.model.feed.FeedMedia;
 import de.danoeh.antennapod.model.feed.SortOrder;
 import de.danoeh.antennapod.storage.database.DBReader;
 import de.danoeh.antennapod.storage.database.DBWriter;
+import de.danoeh.antennapod.storage.preferences.UserPreferences;
 
 /**
  * Implementation of the EpisodeCleanupAlgorithm interface used by AntennaPod.
@@ -98,6 +99,7 @@ public class APCleanupAlgorithm extends EpisodeCleanupAlgorithm {
         for (FeedItem item : downloadedItems) {
             if (item.hasMedia()
                     && item.getMedia().isDownloaded()
+                    && (!item.getFeed().isLocalFeed() || UserPreferences.isAutoDeleteLocal())
                     && !item.isTagged(FeedItem.TAG_QUEUE)
                     && item.isPlayed()
                     && !item.isTagged(FeedItem.TAG_FAVORITE)) {

net/download/service/src/main/java/de/danoeh/antennapod/net/download/service/episode/autodownload/APQueueCleanupAlgorithm.java

@@ -16,6 +16,7 @@ import de.danoeh.antennapod.model.feed.FeedItemFilter;
 import de.danoeh.antennapod.model.feed.SortOrder;
 import de.danoeh.antennapod.storage.database.DBReader;
 import de.danoeh.antennapod.storage.database.DBWriter;
+import de.danoeh.antennapod.storage.preferences.UserPreferences;
 
 /**
  * A cleanup algorithm that removes any item that isn't in the queue and isn't a favorite
@@ -83,6 +84,7 @@ public class APQueueCleanupAlgorithm extends EpisodeCleanupAlgorithm {
         for (FeedItem item : downloadedItems) {
             if (item.hasMedia()
                     && item.getMedia().isDownloaded()
+                    && (!item.getFeed().isLocalFeed() || UserPreferences.isAutoDeleteLocal())
                     && !item.isTagged(FeedItem.TAG_QUEUE)
                     && !item.isTagged(FeedItem.TAG_FAVORITE)) {
                 candidates.add(item);

net/download/service/src/main/java/de/danoeh/antennapod/net/download/service/episode/autodownload/ExceptFavoriteCleanupAlgorithm.java

@@ -83,6 +83,7 @@ public class ExceptFavoriteCleanupAlgorithm extends EpisodeCleanupAlgorithm {
         for (FeedItem item : downloadedItems) {
             if (item.hasMedia()
                     && item.getMedia().isDownloaded()
+                    && (!item.getFeed().isLocalFeed() || UserPreferences.isAutoDeleteLocal())
                     && !item.isTagged(FeedItem.TAG_FAVORITE)) {
                 candidates.add(item);
             }