Fix test name collision (test_writeArrayToRaster)

[garlic-os]

Description

This change renames the writeArrayToRaster series of tests so that none of them override each other by having the same name. The test that wasn't running had a small error that I assume was a typo, and it has been corrected.

Aside: I found this error by running ruff on the project. I did not add tests to ensure a similar problem won't occur again because #650 may already provide a comprehensive solution.

Motivation and Context

test_util.py has two functions named test_writeArrayToRaster_3. Because of the way Python works, the first function was being erased and replaced with the second one, causing it to never run.

How Has This Been Tested?

This change does not break any tests. The test that was re-enabled passes too.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have added an explanation of what your changes do and why you'd like us to include them.
• I have written new tests for your core changes, as applicable.
• I have successfully ran tests with your changes locally.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.