[FIX] sale_timesheet: prevent sale_timesheet_tour to indeterministically fail

Prior to this commit, the `sale_timesheet_tour` was indeterministically failing
due to the fact that the tour step responsible of saving the data was not waiting
for the previous step (responsible to confirm the SO) to be finished.

This commit fixes this issue by ensuring that the buttons that allow confirming
the SO are not visible any more.

closes odoo/odoo#95825

X-original-commit: 287a7449ed5c809847a6b0c9719b8b3cc0215e3a
Signed-off-by: Xavier <xbo@odoo.com>
Signed-off-by: Laurent Stukkens (ltu) <ltu@odoo.com>

addons/sale_timesheet/static/tests/tours/sale_timesheet_tour.js

@@ -47,8 +47,13 @@ tour.register('sale_timesheet_tour', {
     run: 'click',
 }, {
     trigger: 'button.o_form_button_save',
+    extra_trigger: '.o_form_view:not(:has(button[name="action_confirm"]:not(.o_invisible_modifier)))',
     content: 'Click on Save button to save the Sales Order.',
     run: 'click',
+}, {
+    trigger: '.o_form_readonly',
+    content: 'Save is done and form is reloaded.',
+    run: 'click',
 }, tour.stepUtils.toggleHomeMenu(),
 ...tour.stepUtils.goToAppSteps("project.menu_main_pm", 'Go to the Project app.'),
 {