**Steps To Reproduce**
- Go to Documents app
- Upload a Peppol XML file containing an embedded PDF (e.g., invoice with attached PDF)
- Open the document

**Issue**
Opening a Peppol XML document with an embedded PDF causes: `UserError: Only PDF files can have a thumbnail`

The kanban view also shows raw XML code instead of the PDF preview.

**Cause**
Since this commit:
https://github.com/odoo/odoo/commit/37e38b8cd34e

The mail module's `mail_attachement_update_thumbnail` route has a strict mimetype check that rejects thumbnail updates for XML files:

https://github.com/odoo/odoo/blob/c350592b85001b5f36ea6aaf803ee3974e5ebfc1/addons/mail/controllers/attachment.py#L146-L147

Additionally, the documents thumbnail service only generates thumbnails for files where `isPdf()` returns true:

https://github.com/odoo/enterprise/blob/60881b65991cbd2594492b25900ab4bb8c166250/documents/static/src/views/helper/documents_client_thumbnail_service.js#L27-L35

**Solution**
Add `_allow_thumbnail()` hook to allow overriding the mimetype check

And from this PR, I see that a proper thumbnail is the proper behavior:
https://github.com/odoo/enterprise/pull/49111

Which required the thumbnail generation flow multiple overrides:
1. **`isPdf()` check**: The documents thumbnail service only generates thumbnails for files where `isPdf()` returns true. XML files return false, so thumbnail generation is never triggered: https://github.com/odoo/enterprise/blob/60881b65991cbd2594492b25900ab4bb8c166250/documents/static/src/views/helper/documents_client_thumbnail_service.js#L28-L35

2. **`pdf_first_page`**: When thumbnail generation runs, it fetches the first page of the PDF via these routes. For XML with embedded PDFs, the routes must extract and return the embedded PDF bytes instead of the raw XML content: https://github.com/odoo/odoo/blob/c350592b85001b5f36ea6aaf803ee3974e5ebfc1/addons/mail/controllers/attachment.py#L120-L127 https://github.com/odoo/enterprise/blob/60881b65991cbd2594492b25900ab4bb8c166250/documents/controllers/documents.py#L515-L528

3. **`isTextualDocument` in kanban**: XML files are treated as textual documents and displayed showing raw XML code, even when they contain an embedded PDF that should be previewed instead: https://github.com/odoo/enterprise/blob/60881b65991cbd2594492b25900ab4bb8c166250/documents/views/documents_document_views.xml#L106

opw-5252946

---
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

Currently, an error occurs when user tries to create a csv for w2 form with no end date defined.

Steps to replicate:
- Install `l10n_us_hr_payroll`.
- Open Payroll > Reporting > W2 Report.
- Click `New` > Remove value from `End Date` and click Generate.

Error:
```
  File '/home/odoo/odoo19/enterprise/l10n_us_hr_payroll/models/l10n_us_w2.py', line 249, in action_generate_csv
    self.csv_filename = f'form_w2_{self.date_end.year or date.today().year}.csv'
                                   ^^^^^^^^^^^^^^^^^^
AttributeError: 'bool' object has no attribute 'year'
```

Cause:
- As the user did not give any value for `End Date`, False was passed and when the execution flow reached [here] `self.end_date` is False and attempting to access `self.end_date.year` results in this error.

Solution:
- If we do not receive the `self.end_date` while generating the CSV, we will use the current year to generate the CSV file name.

[here]: https://github.com/odoo/enterprise/blob/01be8d6e9384bcb340559847d529b4887e073519/l10n_us_hr_payroll/models/l10n_us_w2.py#L248

No ID

Forward-Port-Of: odoo/enterprise#113408

Steps to reproduce:
1. Install `documents`
2. Create a portal user and share a document folder with edit access
3. Log in as the portal user on a mobile device
4. Try to upload a document inside the shared folder

Issue:
- After selecting a file from the file picker, the document is not uploaded.

Cause:
- On mobile in the portal flow, Upload is triggered from a nested dropdown (inside New) inside the adaptive control-panel dropdown (bottom sheet). By default, DropdownItem uses closingMode="all", so tapping Upload closes parent dropdowns immediately. That unmounts the hidden <input type="file"> before the OS file picker returns. When the user comes back, the input no longer exists, so change never fires and upload does not start.
- Admin/internal users do not hit the same nested adaptive-dropdown path in this view

Solution:
- Set closingMode="'none'" on the Upload DropdownItem so the menu stays mounted while the native picker is open. After a file is selected and onFileInputChange starts upload, close the bottom sheet programmatically with: `window.dispatchEvent(new Event("popstate"))`

opw-5937105

FIX 1:  industry_fsm_sale: set delivery address on project customer]
-----------------------
**Steps to reproduce:**
- Create a product:
   - Product Type: Service
   - Service Tracking: Create on Order (project)
   -  Project Template: FSM type project template
- Confirm a sale order with this product
- Check the generated project customer

**Issue:**
   The customer's delivery address is not set on the generated project.

**Fix:**
  Set the delivery address as the project customer when creating the project.

[FIX] industry_fsm_sale: remove default sale line in fsm projects
------------
**Steps to reproduce:**
   - Install industry_fsm_sale
   - Create a project template of fsm type
   - Create a sale order (service-type product)
   - Confirm the sale order
   - Create a project and select the fsm-type project template
   - Create the project

**Issue:**
  - SQL constraint is triggered, preventing project creation.

**Fix:**
  - If the project template is of fsm type, remove the default sale line from the context.

task-5074893