ACPI: button: Only send KEY_POWER for ACPI_BUTTON_NOTIFY_STATUS

Commit a7e23ec ("ACPI: button: Install notifier for system
events as well") modified the ACPI button behavior to send
`ACPI_BUTTON_NOTIFY_WAKE` events.

This caused a regression on Dell Optiplex 3040 sending `KEY_POWER`
randomly at runtime.

Adjust logic so that the `ACPI_BUTTON_NOTIFY_WAKE` event will never
send `KEY_POWER`.

Fixes: a7e23ec ("ACPI: button: Install notifier for system events as well")
Reported-by: Ian Laurie <nixuser@mail.com>
Closes: https://lore.kernel.org/linux-acpi/CAJZ5v0hbA6bqxHupTh4NZR-GVSb9M5RL7JSb2yQgvYYJg+z2aQ@mail.gmail.com/T/#md8071e480212201f23e4929607386750d3b6bc13
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2357044
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Ian Laurie <nixuser@mail.com>
Link: https://patch.msgid.link/20250404145034.2608574-1-superm1@kernel.org
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: superm1

drivers/acpi/button.c

@@ -458,7 +458,7 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
 	acpi_pm_wakeup_event(&device->dev);
 
 	button = acpi_driver_data(device);
-	if (button->suspended)
+	if (button->suspended || event == ACPI_BUTTON_NOTIFY_WAKE)
 		return;
 
 	input = button->input;