fix: treat any data change as a modification (#2542)

For unknown reasons, it seems some environments emit a `DataChange::Any` event,
rather than specifying content or size, when a file is edited. As an example:

    [src/fs_utils.rs:72:9] &event = DebouncedEvent {
        event: Event {
            kind: Modify(
                Data(
                    Any,
                ),
            ),
            paths: [
                "/home/redacted/content/blog/2024-06-23_example.md",
            ],
            attr:tracker: None,
            attr:flag: None,
            attr:info: None,
            attr:source: None,
        },
        time: Instant {
            tv_sec: 78544,
            tv_nsec: 936740729,
        },
    }

Consequently, because this isn't treated by Zola as a modification, the
site is not rebuilt, which regresses on previous behavior.

This patch fixes this particular case by treating any data modification
events as a modification.

Closes: #2536

src/fs_utils.rs

@@ -38,8 +38,7 @@ fn get_relevant_event_kind(event_kind: &EventKind) -> Option<SimpleFileSystemEve
         EventKind::Create(CreateKind::File) | EventKind::Create(CreateKind::Folder) => {
             Some(SimpleFileSystemEventKind::Create)
         }
-        EventKind::Modify(ModifyKind::Data(DataChange::Size))
-        | EventKind::Modify(ModifyKind::Data(DataChange::Content))
+        EventKind::Modify(ModifyKind::Data(_))
         // Intellij modifies file metadata on edit.
         // https://github.com/passcod/notify/issues/150#issuecomment-494912080
         | EventKind::Modify(ModifyKind::Metadata(MetadataKind::WriteTime))
@@ -181,6 +180,14 @@ mod tests {
                 EventKind::Modify(ModifyKind::Data(DataChange::Content)),
                 Some(SimpleFileSystemEventKind::Modify),
             ),
+            (
+                EventKind::Modify(ModifyKind::Data(DataChange::Any)),
+                Some(SimpleFileSystemEventKind::Modify),
+            ),
+            (
+                EventKind::Modify(ModifyKind::Data(DataChange::Other)),
+                Some(SimpleFileSystemEventKind::Modify),
+            ),
             (
                 EventKind::Modify(ModifyKind::Metadata(MetadataKind::WriteTime)),
                 Some(SimpleFileSystemEventKind::Modify),
@@ -202,7 +209,7 @@ mod tests {
         ];
         for (case, expected) in cases.iter() {
             let ek = get_relevant_event_kind(&case);
-            assert_eq!(ek, *expected);
+            assert_eq!(ek, *expected, "case: {:?}", case);
         }
     }