RFR: 8278609: accessibility frame is misplaced on a secondary monitor on macOS

[Victor Dyakov]

On Mon, 13 Dec 2021 15:33:48 GMT, Aleksandr Veselov <duke at openjdk.java.net> wrote:

> Use primary screen instead of window main screen to properly convert mouse position from screen coordinates to window ones.

please re-submit against 18 repo

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PR: https://git.openjdk.java.net/jdk/pull/6815