fix range select
fix range select

Summary:
Where was a bug, where a range selection using the shift key wasn't working, when the start of the selection was outside the viewport.
The problem was caused by `selectInRange` firing twice, the second time with wrong arguments. In this diff, we are not firing the `onMouseEnterRow` handler, when the shift key is pressed.

Reviewed By: jknoxville

Differential Revision: D15897880

fbshipit-source-id: 95402dcbe9f8ce691be16cfd103918b09ff9e75c

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