Fix refresh rate not applied during profile change in some systems

Author: Nuzair46

src-tauri/src/backend/windows/apply.rs

@@ -55,6 +55,7 @@ pub fn apply_layout_against_snapshot(
 
         if enabled {
             apply_desired_source_mode(path, &mut next_modes, desired_output);
+            apply_desired_target_refresh(path, desired_output);
         }
     }
     reorder_paths_for_desired_priority(&mut next_paths, &desired_outputs);
@@ -360,6 +361,18 @@ fn apply_desired_source_mode(
     }
 }
 
+fn apply_desired_target_refresh(
+    path: &mut DISPLAYCONFIG_PATH_INFO,
+    desired_output: Option<&&monarch::OutputConfig>,
+) {
+    let Some(output) = desired_output.copied() else {
+        return;
+    };
+    let desired_refresh_mhz = output.refresh_rate_mhz.max(1);
+    path.targetInfo.refreshRate.Numerator = desired_refresh_mhz;
+    path.targetInfo.refreshRate.Denominator = 1000;
+}
+
 fn reorder_paths_for_desired_priority(
     paths: &mut [DISPLAYCONFIG_PATH_INFO],
     desired_outputs: &HashMap<(u64, u32), &monarch::OutputConfig>,