Steps to reproduce:
-------------------
1. Install `l10n_mx_edi_pos` and set the company to Mexico.
2. In PoS, make an order with one product and pay it.
3. Open the order in the backend, click "Return Products" to make a refund, but don't pay it, cancel it instead.
4. From the same order, click "Return Products" again to make a second refund, and pay it normally.
5. Go to the orders list, select the main order and the paid refund (not the cancelled one), then Actions > Create Global Invoice.

-> Observation: error in the global invoice.

In the CFDI tab of the main order the line is "Send Global In Error", and hovering on it the detail says "Failed to distribute some negative lines".

Why:
----
When we make the global invoice, we remove the refunds from the order. A cancelled refund was never paid, so we should not count it. But we were counting it too. So we removed the refund amount twice in our case, one for the paid refund, and one for the cancelled one, and we end up with an order with negative amount that cannot be distributed.

The fix:
--------
We now skip the cancelled orders when we search the refunds, the same way it is done above when we collect the refunded orders.

opw-6261404

Forward-Port-Of: odoo/enterprise#127560
Forward-Port-Of: odoo/enterprise#120996

Problem:
When selecting several sign templates with different signatory counts in the "Sign documents" wizard (e.g. a Contract template together with a Computer Policy template), the Employee Role field would empty out or disappear entirely, with "No records" shown in the dropdown. This blocked users from sending the signature request at all.

Purpose:
`_compute_responsible_ids` matched roles across the selected templates by recordset identity (`&=`), i.e. by database id. Since the Sign Template Builder allows free-text role creation, two templates can end up with roles that are visually/semantically identical (same name, e.g. "Employee") but were created as separate `sign.item.role` records with different ids. The id-based intersection then evaluated to an empty recordset, which made the Employee Role field's domain empty and the field itself collapse in the UI.

This fix matches roles by name instead of by id when computing the common roles across selected templates, and resolves the correct per-template role id by name in `validate_signature` instead of reusing a single id across every template.

Steps to Reproduce On Runbot:
1. Go to Sign > Templates and create two templates, each with one role named "Employee", added independently (so they end up as two distinct sign.item.role records with the same name).
2. Go to an employee's Contract, click "Sign Documents".
3. Select both templates in "Documents to sign".
4. Observe the Employee Role field empties out / shows no records, and the request cannot be sent.

opw-6445327

Issue:
Swiss payslips count one extra absence day for employees without a working schedule. A one day accident leave can therefore be prorated as two days, reducing the regular wage and overstating the accident salary.

Steps to reproduce:
* Install Swiss Payroll.
* Configure a monthly employee without a working schedule.
* Assign one day of accident time off.
* Generate the payslip for that month.

Cause:
The Swiss wage computation derives absence boundaries from the date portion of the leave's UTC datetimes: https://github.com/odoo/enterprise/blob/16c29e1bab34b5bcb2b001477d928ec5eb294a97/l10n_ch_hr_payroll/models/hr_payslip.py#L313-L330

A fully flexible employee's full day leave starts at local midnight. In timezones ahead of UTC, that start is stored on the previous UTC date, so the inclusive calendar day computation adds an extra day.

Solution:
We need to use the requested time off dates for both payslip range filtering and absence proration. These fields preserve the calendar days selected by the user independently of timezone conversion, while leaving the UTC datetimes and half-day handling unchanged.

opw-6435086

**Steps to reproduce:**
- Go to Documents app in mobile
- Go to the kanban view
- Add some files and select one
- Click on `Info & Tags` button in the control panel
- Reload the page
- Chatter is not displayed but the button is still enabled
- Switching to the list view properly shows it

**Issue:**
Original fix (see [1]) was not enough for every case. Additional issues:
- Chatter hidden on init even when its panel has `visible = true`
- State desynchronized with the view when switching menu type (kanban/list) or by previewing a document and coming back
- When using the button with an open preview, chatter shows up in the background but is not accessible (and going back discards it)
- Removing selection with an open chatter disable the related action

**Fix:**
- Disable the chatter on mobile init by default to avoid having to manually move it back
- Reset chatter on selection removal to avoid getting stuck in the menu
- Reset chatter on view switch to avoid being in the wrong state afterwards
(and revert the previous css changes)

Not a great fix (quite mobile-specific) and there might still be some edge cases.

[1] original fix: https://github.com/odoo/enterprise/commit/cf3c2fce8a6b7b2d7547d44a0e4423f887986d52

opw-6061993