recalculate TJM just after count data deletion

[spch-GL]

Describe the bug After count data deletion (Effacer des données) the TJM field of count table is let unchanged

To Reproduce Steps to reproduce the behavior:

1. Check the TJM for a count
2. Suppress some or all data for that count
3. Check taht the TJM for that count is still the same

Expected behavior The TJM should be updated.

Version on which you encounter the issue:

• QGIS version and plugin version: [e.g. QGIS 3.22 / plugin v0.10.17]

[spch-GL]

It's the same with plugin v2.1.1

[jmaret287]

--> P3