Refactor follow-up: Trust dir stats outside linux & mac

Restore the previous default of trusting directory stat updates to
reflect directory changes on platforms other than linux & mac, without
checking for mount types.

Also clarify wording in heuristic comment slightly.

yazi-fs/src/mounts/partition.rs

@@ -14,7 +14,7 @@ pub struct Partition {
 }
 
 impl Partition {
-	// Match mount types that do not reliably emit change notifications, or update directory
+    // Match mount types that do not reliably emit change notifications, or do not update directory
     // metadata on changes, and should be refreshed frequently / heuristically.
 	pub fn heuristic(&self) -> bool {
 		let b: &[u8] = self.fstype.as_ref().map_or(b"", |s| s.as_encoded_bytes());

yazi-fs/src/mounts/partitions.rs

@@ -38,7 +38,9 @@ impl Partitions {
 		}
 		#[cfg(not(any(target_os = "linux", target_os = "macos")))]
 		{
-			true
+			// For now, assume other targets update directory stat data correctly & do not need
+			// heuristic polling.
+			false
 		}
 	}
 }