[UPD] web_dialog_size: reduce rpc call to get config

After installing web_dialog_size and setup its parameter, there's
a slight delay where we can see the modal at its normal size and then
after a rpc to ir.config_parameter:get_web_dialog_size_config() the
modal is maximized.

This commit is to set a session value then use it to set initial dialog
size upfront without delay.

web_dialog_size/models/ir_http.py

@@ -0,0 +1,14 @@
+# Copyright 2023 Camptocamp
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class Http(models.AbstractModel):
+    _inherit = "ir.http"
+
+    def session_info(self):
+        IrConfigSudo = self.env["ir.config_parameter"].sudo()
+        session_info = super().session_info()
+        session_info.update(IrConfigSudo.get_web_dialog_size_config())
+        return session_info