[PLT-1452] Vb/fix flaky annotation test plt 1452 2

[vbrodsky]

Description

This PR finally addresses flaky test issues for LLM annotation upload projects. These projects have 2 ways of creating data rows: 'automatic' (at the time of project creation) and 'pre-created' (dataset and data rows exist).

The tests exhibited flaky behavior in the automatic mode. At times data row creation did not finish(due to load?). I updated the test to use the 'pre-created' mode for data rows.

Commits: this commit is the actual fix: 4130d32. The rest are produced by the linter

How to read sdk integration test results for this PR:
Unit tests for Python 3.12 test this change directly. It show the issue has been addressed

Type of change

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