JS: accept an input edit if the cell loses focus
JS: accept an input edit if the cell loses focus

Fixes a bug that allowed the value of a cell being edited to revert to its
original value if another tool window such as the Control Panel was
clicked.

Signed-off-by: Harry King <409587b9e6671aa0763646191d292852dc49a658@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim