[nrf noup] wifi: Fix the heap allocation warning

By default nRF70 driver allocates a higher heap to handle most cases,
but as Matter doesn't use much heap, enable the ignore minimum warning
configuration.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>

config/nrfconnect/chip-module/Kconfig.defaults

@@ -56,6 +56,9 @@ config SYSTEM_WORKQUEUE_STACK_SIZE
 config HEAP_MEM_POOL_SIZE
     default 110720 if CHIP_WIFI
 
+config HEAP_MEM_POOL_IGNORE_MIN
+    default y if CHIP_WIFI
+
 config CHIP_MALLOC_SYS_HEAP_SIZE
     default 8192 if NET_L2_OPENTHREAD