[Mellanox] [PPI] Enable global port late create for SN5600 (#15866)

- Why I did it
Enabled port late create on SN5600 Spectrum-4 switch boots up with no ports

Work item tracking
N/A

- How I did it
Updated SAI xml config file

- How to verify it
Run sonic-mgmt tests of fastboot

Signed-off-by: Nazarii Hnydyn <nazariig@nvidia.com>

device/mellanox/x86_64-nvidia_sn5600-r0/ACS-SN5600/sai_5600.xml

@@ -27,6 +27,9 @@
         <!-- Number of ports in the following port list -->
         <number-of-physical-ports>65</number-of-physical-ports>
 
+        <!-- Global port late create -->
+        <late-create-all-ports>1</late-create-all-ports>
+
         <!-- List of ports in the device -->
         <ports-list>
             <port-info>

device/mellanox/x86_64-nvidia_sn5600_simx-r0/ACS-SN5600/sai_5600.xml

@@ -27,6 +27,9 @@
         <!-- Number of ports in the following port list -->
         <number-of-physical-ports>65</number-of-physical-ports>
 
+        <!-- Global port late create -->
+        <late-create-all-ports>1</late-create-all-ports>
+
         <!-- List of ports in the device -->
         <ports-list>
             <port-info>