Survey respondents now get a clearer visual cue when they miss a required answer in a matrix question. Rows with missing responses are highlighted in red, making it easier to spot and complete unfinished answers before submitting.

Purpose
=======
In addition to the current alert message, when a user forgot to
pick an answer in a matrix, highlight in red the rows where the
answer is missing.

Task-3162051

Contact list views can now include a mobile phone field as an optional column. This makes it easier for users to access mobile contact details directly from list views when needed.

**Current behavior before PR:**

There was no mobile field in the optional fields of tree view in res.partner.

**Desired behavior after PR is merged:**

Added the mobile field as optional field.

**Task**-3184771

Newly inserted or copied Odoo graphs in spreadsheets are now selected right away, making it clearer which chart the user is editing. This improves the spreadsheet experience by reducing extra clicks and aligning chart behavior with user expectations.

Adapt changes from o_spreadsheet of the opening of the chart side panel in the Odoo tests.

Odoo task [2982377](https://www.odoo.com/web#id=2982377&cids=1&menu_id=4720&action=333&active_id=2328&model=project.task&view_type=form)

The spreadsheet editing feature was adjusted to work with an updated internal error-handling process. This helps keep spreadsheet interactions reliable and aligned with the latest platform behavior, with no expected change to day-to-day usage.

Odoo task [3090717](https://www.odoo.com/web#id=3090717&menu_id=4720&cids=1&action=333&active_id=2328&model=project.task&view_type=form)