Spreadsheet users now see a warning when a pivot data source is not used in any formula. This helps users spot unused data sources more easily from the menu and side panel, reducing confusion and keeping spreadsheets cleaner.

This commit adds a warning in the menu item and the side panel of the pivot view when the data source is not used in any formula.

Task: [3487684](https://www.odoo.com/web#id=3487684&cids=1&menu_id=4720&action=333&active_id=2328&model=project.task&view_type=form)

Embedded views added to Knowledge articles now automatically switch the article to a full-width layout. This gives users more room to view and work with embedded content, making articles easier to edit and read.

This commit changes the behavior of inserting any embedded view inside of a knowledge article: when inserted we switch the view to full_width. This way it is easier to work with embedded views as they are bigger and easier to see.

task-3604828

The Documents PDF manager now supports keyboard shortcuts for common actions like splitting, adding files, and using action buttons. This makes handling PDFs quicker and easier for users who process documents frequently.

Make the PDF manager easier to use by mapping its action buttons to hotkeys:
- split -> ALT + S
- close -> already mapped to escape
- add file -> ALT + F
- other actions -> ALT + SHIFT + 1..9

task-3510539

Timesheet grids now visually flag entries that need attention, such as more than 24 hours in a day, missing expected hours, or overtime. This helps managers and employees spot potential mistakes, lost billing, or workload issues faster, while also improving the accuracy of expected working time calculations.

The main goal of this task is to give users visual clues so
that they can see at glance there is an abnormal situation to address.

Before this commit:
1) grid view: It makes no sense to encode more than 24h in one day.
We can thus safely assume that the user mistyped, but the user is not
alerted about it.

2) if an employee has timesheeted less than they should have,
the company is potentially losing money. It must then be rectified asap.
Same when doing overtime, it can mean that the company will have to
compensate the employee accordingly. It is also a clue for the manager
that an employee may be overloaded.

3) using _work_intervals_batch to get resources work interval doesn't take
into consideration their calendar.

In this commit:
1) Cells that are > 24h are highlighted in red when grouping by an employee
or when viewing the 'my timesheets' menu

2) We colored the cell of the total per day of each employee in the section.
- red when there are missing timesheets
- orange if there is overtime.

3) using _get_valid_work_intervals fixed the issue.

Related PRs:
Community: https://github.com/odoo/odoo/pull/124512

task-3054342

The AvaTax connection test pop-up has been improved to clearly show whether the authentication was successful or failed. Previously, users saw a confusing dictionary of raw data without knowing if the connection worked. Now the results are displayed as a clear list with explicit success/failure messaging, making it much easier for users to understand the connection status.

Before this commit, the pop-up when testing the avatax connection was very unclear for user. Indeed, we displayed a dictionary of information without really telling the user that the connection was successful or not.

Now, when testing the connection we clearly indicate if the authentication was a success or not, and we display all the information as a list.

task: 3614808