feat(widgets): iOS widget improvements (#19893)

* improvements to error handling, ability to select "Favorites" as a virtual album, fix widgets not showing image when tinting homescreen

* dont include isFavorite all the time

* remove check for if the album exists

this will never run because we default to Album.NONE and its impossible to distinguish between no album selected and album DNE (we dont know what the store ID is, only what iOS gives)

mobile/ios/WidgetExtension/ImageEntry.swift

@@ -14,19 +14,6 @@ struct ImageEntry: TimelineEntry {
     var deepLink: URL? = nil
   }
 
-  // Resizes the stored image to a maximum width of 450 pixels
-  mutating func resize() {
-    if image == nil || image!.size.height < 450 || image!.size.width < 450 {
-      return
-    }
-
-    image = image?.resized(toWidth: 450)
-
-    if image == nil {
-      metadata.error = .unableToResize
-    }
-  }
-
   static func build(
     api: ImmichAPI,
     asset: Asset,
@@ -83,7 +70,10 @@ struct ImageEntry: TimelineEntry {
 
       guard let imageData = try? Data(contentsOf: imageURL),
         let metadataJSON = try? Data(contentsOf: metadataURL),
-        let decodedMetadata = try? JSONDecoder().decode(Metadata.self, from: metadataJSON)
+        let decodedMetadata = try? JSONDecoder().decode(
+          Metadata.self,
+          from: metadataJSON
+        )
       else {
         return nil
       }
@@ -98,7 +88,7 @@ struct ImageEntry: TimelineEntry {
     return nil
   }
 
-  static func handleCacheFallback(
+  static func handleError(
     for key: String,
     error: WidgetError = .fetchFailed
   ) -> Timeline<ImageEntry> {
@@ -108,35 +98,32 @@ struct ImageEntry: TimelineEntry {
       metadata: EntryMetadata(error: error)
     )
 
-    // skip cache if album not found or no login
-    // we want to show these errors to the user since without intervention,
+    // use cache if generic failed error
+    // we want to show the other errors to the user since without intervention,
     // it will never succeed
-    if error != .noLogin && error != .albumNotFound {
-      if let cachedEntry = ImageEntry.loadCached(for: key) {
-        timelineEntry = cachedEntry
-      }
+    if error == .fetchFailed, let cachedEntry = ImageEntry.loadCached(for: key)
+    {
+      timelineEntry = cachedEntry
     }
 
     return Timeline(entries: [timelineEntry], policy: .atEnd)
   }
+
 }
 
 func generateRandomEntries(
   api: ImmichAPI,
   now: Date,
   count: Int,
-  albumId: String? = nil,
+  filter: SearchFilter = Album.NONE.filter,
   subtitle: String? = nil
 )
   async throws -> [ImageEntry]
 {
 
   var entries: [ImageEntry] = []
-  let albumIds = albumId != nil ? [albumId!] : []
 
-  let randomAssets = try await api.fetchSearchResults(
-    with: SearchFilters(size: count, albumIds: albumIds)
-  )
+  let randomAssets = try await api.fetchSearchResults(with: filter)
 
   await withTaskGroup(of: ImageEntry?.self) { group in
     for (dateOffset, asset) in randomAssets.enumerated() {