Fix text/uri-list transformation in tree view drag for remote environments (#292818)

* Initial plan

* Fix text/uri-list transformation in tree view drag and drop for remote environments

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

* Improve variable naming in handleDrag test

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>