Ingm 494 call notify send process data before first processdata send

[GullinBustin]

Notify process data before start PDO

Fixes # INGM-494

Type of change

• [x] In ProcessDataThread, notify send and receive processdata before and after start pdo
• [x] Don't set the default initial value to the Safety Master PDU PDOMap (not necessary any more)

Tests

• [x] Run tests.

Documentation

Please update the documentation.

• [x] Update docstrings of every function, method or class that change.
• [x] USe type hints for every function and argument.
• [x] Build documentation locally to verify changes.
• [x] Add the changes at the [Unreleased] section of the CHANGELOG.

Code formatting

• [x] Use the ruff package to format the code: ruff format ingeniamotion tests.
• [x] Use the ruff package to lint the code: ruff check ingeniamotion.

Others

• [x] Set fix version field in the Jira issue.