tdf#161332 sw: fix missing selection of floating table
A fixed-height cell can contain a bigger image, which is
cropped by cell boundaries. In this case, it was not
possible to select the floating table by clicking on its
right border.
Note: fix also tests of tdf#44773 and tdf#160836 related
to DPI-dependent platforms, see tdf#160992.
Follow-up to commit
30de13743f144aced83bc43d310592f82788c910
"tdf#160836 sw: resize rows at images cropped by row height"
and commit
f3b899655018397e71300dbb32cdf4f82940a68b
"tdf#160842 sw: select cell content instead of cropped part of image".
Change-Id: I22c3e34f4c8147736c29b62722f7fc43c862ba48
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/168237
Reviewed-by: László Németh <nemeth@numbertext.org>
Tested-by: Jenkins