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## Short functional explanation of the error
When an employee enters multiple attendances for a single day, the company tolerance time isn't computed correctly.

## Reproduction Steps
1. Go to attendances.
2. Click on configuration and scroll down to the Extra Hours section. Set a Tolerance Time in Favor of Company of 15 minutes.
3. Create 2 attendances for the same employee: one attendance from 8 to 15 for example, and a second one from 16 to 18:12.

### Expected behavior
As the overtime entered is 12 minutes, which is inferior to the company tolerance time of 15 minutes, no extra time should be computed.

### Unexpected behavior
12 minutes of overtime are computed.

## Origin of the issue
Let's say we enter 2 different shifts for the same day. Our work day should be 8 hours, and the sum of both shifts reaches 8 hours or more. We shouldn't have any overtime. However, in the code, the overtime is negative. This is compensated by, in our case, the post-work time: in our case, our overtime duration will be equal to -1, but our post-work time will be equal to 1.2. Both cancel each other, and in the end we obtain 0.2 of overtime, which corresponds to our 10 minutes overtime. However, in this code: https://github.com/odoo/odoo/blob/afcbd98594c9f7007f03a343ea40ea122b955459/addons/hr_attendance/models/hr_attendance.py#L374-L380 it isn't computed that way: because post-work time is 1.2, which is above our company tolerance time of 15 minutes (0.25 in the code), we will always be in the case where we exceed the tolerance time.

Hence, we have to "flatten" the overtime duration and the post-work time before reaching that piece of code.

note: the same bug exists for the employee tolerance time, which
is corrected in this commit.
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opw-5136861

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Currently, an error occurs when the user tries to confirm an invoice using a misconfigured journal.

**Steps to produce:-**
- Install the **Accounting** module and switch to the "EC company" with demo data.
- Navigate to `Accounting > Journals, open the journal named "001-001 Facturas de cliente", and duplicate it`.
- In the duplicated journal:
   - `Uncheck` the `Use Documents` option.
   - Under Advanced Settings, `enable` the `Electronic Invoicing` option and save.
- Create a new invoice using the `001-001 Facturas de cliente (Copy)` journal.
- Change the invoice name to `test`.
- Attempt to `confirm` the invoice.

**Error:-**
`IndexError: list index out of range`

**Cause:-**
- When the user disables "Use Documents" and enables EDI, the journal saves with EDI active but without showing the related configuration.

**Solution:-**
- Updated the `invisible` attribute for the EDI config group in the journal form view to prevent evaluation errors when "Use Documents" is not enabled.

**sentry-6785644675**