Persist fabrics on fabric removal and fabric label update

Author: ivmarkov

rs-matter/src/fabric.rs

@@ -586,6 +586,8 @@ impl FabricMgr {
             .push_str(label)
             .map_err(|_| ErrorCode::NoSpace)?;
 
+        self.changed = true;
+
         Ok(())
     }
 
@@ -599,6 +601,8 @@ impl FabricMgr {
 
         self.fabrics.retain(|fabric| fabric.fab_idx != fab_idx);
 
+        self.changed = true;
+
         Ok(())
     }