Add note mentioning PathTooLongException regression on Windows

Romuald Atchadé - OOO until Jan 11th, 2026requested to merge
docs-long-path-windows-runner into main

What does this MR do?

Update the PathTooLongException troubleshooting doc to mention the regression in v17.8.3 to v 17.9.x and add existing workaround.

Why was this MR needed?

To save time to users who might encounter the issue but have to use to impacted version.

What's the best way to test this MR?

TBD

What are the relevant issue numbers?

close gitlab#530088 (closed)

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