fix extension assembly paths for linux

[pinzart90]

Issue:
Extensions assembly paths contain windows style dir separators. This is causing load issues on linux.

Purpose

Fix extension assembly paths when running on linux

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

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[github-actions]

UI Smoke Tests

Test: success. 2 passed, 0 failed.
TestComplete Test Result
Workflow Run: UI Smoke Tests
Check: UI Smoke Tests - net8.0

[mjkkirschner]

Hmm -
Looks ok but I hope there would be a cross platform unified way to do this.

also why was this not a problem last year?

[pinzart90]

Hmm - Looks ok but I hope there would be a cross platform unified way to do this.

also why was this not a problem last year?

We could have this code fix run on both win and linux, but it would do redundant operations when running on windows.
Extensions are created on windows (for now) and the paths are windows stlye. We only need to make them linux compatible.