[FIX] hw_posbox_homepage: Fix default server value in steps by steps …

…wizard

in helpers 'get_odoo_server_url()' return the server string or False.
In steps by steps config wizard we display this value.
So in server input it display 'False' and with this value we can't submit the form

Now we set a empty string if the return is 'False'

closes odoo/odoo#48329

X-original-commit: 57283f2
Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>

addons/hw_posbox_homepage/controllers/main.py

@@ -220,7 +220,7 @@ def step_by_step_configure_page(self):
             'breadcrumb': 'Configure IoT Box',
             'loading_message': 'Configuring your IoT Box',
             'ssid': helpers.get_wifi_essid(),
-            'server': helpers.get_odoo_server_url(),
+            'server': helpers.get_odoo_server_url() or '',
             'hostname': subprocess.check_output('hostname').decode('utf-8').strip('\n'),
         })