Add detailed error logging for client credentials authentication

[giuliastf]

Add debug error details logging for 400 status responses in client credentials authentication.

When client credentials authentication fails with 400 status, developers only received a generic error message without specific details about what went wrong.

Development Package

• Add this package as a dependency in your pyproject.toml:

[project]
dependencies = [
  # Exact version:
  "uipath==2.0.79.dev1004490598",

  # Any version from PR
  "uipath>=2.0.79.dev1004490000,<2.0.79.dev1004500000"
]

[[tool.uv.index]]
name = "testpypi"
url = "https://test.pypi.org/simple/"
publish-url = "https://test.pypi.org/legacy/"
explicit = true

[tool.uv.sources]
uipath = { index = "testpypi" }