[FIX] web: disable limit for grouped kanban views

Steps to reproduce
==================

- Go to a kanban view with lots of records, for example products
- Remove any filter and group by name

There is only 80 groups, and there is no way to get the next ones

Cause of the issue
==================

The `web_read_group` uses a limit, by default of 80

Solution
========

For kanban grouped views, we don't want to set a limit on the groups

opw-3283004

closes odoo/odoo#120758

X-original-commit: bf772181933ce5334da35c8368455963b2478399
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>
Signed-off-by: Hubert Van De Walle <huvw@odoo.com>

addons/web/static/src/views/kanban/kanban_model.js

@@ -275,6 +275,7 @@ export class KanbanDynamicGroupList extends DynamicGroupList {
         this.previousParams = state.previousParams || "[]";
 
         this.groupBy = this.groupBy.slice(0, 1);
+        this.limit = null;
 
         this.model.bus.addEventListener("group-updated", async ({ detail }) => {
             if (this.groups.some((g) => g.id === detail.group.id)) {

addons/web/static/tests/views/kanban_view_tests.js

@@ -45,6 +45,7 @@ import { ViewButton } from "@web/views/view_button/view_button";
 
 import { Component, onWillRender, xml } from "@odoo/owl";
 import { SampleServer } from "@web/views/sample_server";
+import { KanbanDynamicGroupList } from "@web/views/kanban/kanban_model";
 
 const serviceRegistry = registry.category("services");
 const viewWidgetRegistry = registry.category("view_widgets");
@@ -1119,6 +1120,27 @@ QUnit.module("Views", (hooks) => {
         assert.containsNone(target, ".o_pager");
     });
 
+    QUnit.test("there should be no limit on the number of fetched groups", async (assert) => {
+        patchWithCleanup(KanbanDynamicGroupList, { DEFAULT_LIMIT: 1 });
+
+        await makeView({
+            type: "kanban",
+            resModel: "partner",
+            serverData,
+            arch: `
+                <kanban>
+                    <templates>
+                        <t t-name="kanban-box">
+                            <div><field name="foo"/></div>
+                        </t>
+                    </templates>
+                </kanban>`,
+            groupBy: ["product_id"],
+        });
+
+        assert.containsN(target, ".o_kanban_group", 2, "there should be 2 groups");
+    });
+
     QUnit.test("pager, ungrouped, with default limit", async (assert) => {
         assert.expect(3);