Document platform-specific WiFi power management constants for ESP32, ESP8266, and Cyw43

reference/micropython/network/WLAN.pyi

@@ -18,19 +18,14 @@ class WLAN:
         # now use sockets as usual
     """
 
-    PM_NONE: int
-    PM_POWERSAVE: int
-    PM_PERFORMANCE: int
-
-    """\
-    Allowed values for the ``WLAN.config(pm=...)`` network interface parameter:
-
-    * ``PM_PERFORMANCE``: enable WiFi power management to balance power
-    savings and WiFi performance
-    * ``PM_POWERSAVE``: enable WiFi power management with additional power
-    savings and reduced WiFi performance
-    * ``PM_NONE``: disable wifi power management
-    """
+    PM_NONE: int = ...
+    """Disable WiFi power management (always on, highest performance, highest power consumption)"""
+    PM_PERFORMANCE: int = ...
+    """Enable WiFi power management to balance power savings and WiFi performance"""
+    PM_POWERSAVE: int = ...
+    """Enable WiFi power management with additional power savings and reduced WiFi performance"""" 
+
+    // **Note:** The numeric values of these constants are platform-specific:
 
     def __init__(self, interface_id: int = ..., /) -> None:
         """

tests/quality_tests/feat_networking/check_network/check_wlan.py

@@ -4,4 +4,9 @@
 # ref : https://github.com/Josverl/micropython-stubber/issues/338
 wlan = network.WLAN(network.STA_IF)
 
-wlan.config(pm = 0xa11140) # set power mode to get WiFi power-saving off (if needed)
+wlan.config(pm = 0xa11140) # set power mode to get WiFi power-saving off (if needed)
+
+# Better: Use symbolic constants for portability across different MicroPython ports
+wlan.config(pm=network.WLAN.PM_NONE)  # Disable power management
+wlan.config(pm=network.WLAN.PM_PERFORMANCE)  # Balanced power/performance
+wlan.config(pm=network.WLAN.PM_POWERSAVE)  # Maximum power saving