chore(import-export): disable debug for ci tests COMPASS-8920

[Anemy]

COMPASS-8920

Previously we were including all of these import-export debugs, which were ~80,000 out of 100,000 lines.

Before
https://parsley.mongodb.com/evergreen/10gen_compass_main_unit_tests_ubuntu_test_electron_9c656bbb8515f6b131daa86d4b0ca94abd6ce71b_25_09_17_14_25_40/0/task?bookmarks=0,91994&shareLine=12945

After
https://parsley.mongodb.com/evergreen/10gen_compass_main_unit_tests_rhel_test_electron_patch_9c656bbb8515f6b131daa86d4b0ca94abd6ce71b_68caf82a3c54490007231169_25_09_17_18_04_27/0/task?bookmarks=0,14492&shareLine=12799

We could instead update our debug in our evergreen to either not include debugs, or filter out import-export there:

compass/.evergreen/functions.yml

Line 267 in 9c656bb

DEBUG: ${debug|}

Not sure if we get value out of the other debug calls though so I figured I'd go with the minimum change here.
I don't think that these debug calls are landing anywhere in e2e test logs.

[Copilot]

Pull Request Overview

This PR disables debug output for CI tests in the compass-import-export package to reduce log verbosity. Previously, import-export debug logs were generating approximately 80,000 out of 100,000 total log lines in CI runs, making it difficult to find relevant information.

• Disables debug output by setting DEBUG= environment variable for CI test scripts
• Applies the change to both regular and electron test CI commands

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