Fix default zone creation to account for monitor rotation

When creating a new monitor with Orientation set to ROTATE_90 or
ROTATE_270, the default "All" zone dimensions are now correctly swapped
to match the rotated image dimensions. This prevents zm_zone.cpp from
reporting that zones extend outside of image dimensions and having to
fix them at runtime.

Fixes issue where monitors created with Rotate Right or Rotate Left
would generate warnings like:
"Zone 1/All for monitor X extends outside of image dimensions,
(0,0), (3839,2159) != (2160,3840), fixing"

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: SteveGilvarry

web/includes/actions/monitor.php

@@ -261,16 +261,25 @@
 
       if ( $monitor->insert($changes) ) {
         $mid = $monitor->Id();
-        $zoneArea = $newMonitor['Width'] * $newMonitor['Height'];
+        // Adjust zone dimensions if monitor has rotation applied
+        $zoneWidth = $newMonitor['Width'];
+        $zoneHeight = $newMonitor['Height'];
+        if (isset($newMonitor['Orientation']) &&
+            ($newMonitor['Orientation'] == 'ROTATE_90' || $newMonitor['Orientation'] == 'ROTATE_270')) {
+          // Swap dimensions for 90/270 degree rotations
+          $zoneWidth = $newMonitor['Height'];
+          $zoneHeight = $newMonitor['Width'];
+        }
+        $zoneArea = $zoneWidth * $zoneHeight;
         $zone = new ZM\Zone();
         if (!$zone->save(['MonitorId'=>$monitor->Id(), 'Name'=>'All', 'Coords'=>
           sprintf( '%d,%d %d,%d %d,%d %d,%d', 0, 0,
-            $newMonitor['Width']-1,
+            $zoneWidth-1,
             0,
-            $newMonitor['Width']-1,
-            $newMonitor['Height']-1,
+            $zoneWidth-1,
+            $zoneHeight-1,
             0,
-            $newMonitor['Height']-1),
+            $zoneHeight-1),
           'Area'=>$zoneArea,
           'MinAlarmPixels'=>intval(($zoneArea*.05)/100),
           'MaxAlarmPixels'=>intval(($zoneArea*75)/100),