Dev UI: open code in IDE should use IDE path from scanning processes

[snowdrop-bot]

ATM we scan the processes to find which IDE to use, but then we discard the running process command, and invoke idea or eclipse hoping it's in the user's $PATH, which turns out is not necessarily true, for people with multiple versions of each IDEs.

It would be nice if the scanning of processes returned the exact IDE command path and we used that instead of relying on $PATH.

CC @geoand

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quarkusio#15721

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$upstream:15721$