[FIX] web: disable phone test with voip

The module `crm.voip` alters the focusable behaviour of the phone
widget by overriding the `canCall` method.

We thus disable this test if the module is installed.

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

@@ -3286,6 +3286,14 @@ QUnit.module('Views', {
     });
 
     QUnit.test('navigation with tab key in readonly form view', function (assert) {
+        // The behavior of the phone widget is completely altered by crm_voip so
+        // this test fails if crm_voip is installed. The enterprise module is
+        // responsible for testing its own behavior in its own tests.
+        if ('crm.voip' in odoo.__DEBUG__.services) {
+            assert.expect(0);
+            return;
+        }
+
         assert.expect(3);
 
         this.data.partner.records[1].product_id = 37;