Refine doc comments to better call out combined nature of upload progress

Author: Johennes

crates/matrix-sdk-ui/src/timeline/event_item/local.rs

@@ -91,14 +91,15 @@ pub enum EventSendState {
 /// This type represents the "send progress" of a local event timeline item.
 #[derive(Clone, Debug)]
 pub enum EventSendProgress {
-    /// A media is being uploaded.
+    /// A media (consisting of a file and possibly a thumbnail) is being
+    /// uploaded.
     MediaUpload {
         /// The index of the media within the transaction. A file and its
         /// thumbnail share the same index.
         index: u64,
 
-        /// The current combined upload progress for both the file and,
-        /// if it exists, its thumbnail.
-        progress: RelativeTransmissionProgress,
+        /// The combined upload progress across the file and, if existing, its
+        /// thumbnail.
+        progress: AbstractProgress,
     },
 }

crates/matrix-sdk/src/send_queue/mod.rs

@@ -2240,7 +2240,8 @@ pub enum RoomSendQueueUpdate {
         event_id: OwnedEventId,
     },
 
-    /// A media upload has made progress.
+    /// A media upload (consisting of a file and possibly a thumbnail) has made
+    /// progress.
     MediaUpload {
         /// The media event this uploaded media relates to.
         related_to: OwnedTransactionId,
@@ -2252,8 +2253,9 @@ pub enum RoomSendQueueUpdate {
         /// thumbnail share the same index.
         index: u64,
 
-        /// The transmission progress of this individual file.
-        progress: RelativeTransmissionProgress,
+        /// The combined upload progress across the file and, if existing, its
+        /// thumbnail.
+        progress: AbstractProgress,
     },
 }