patch 9.2.0322: tests: test_popupwin fails

patch 9.2.0322: tests: test_popupwin fails

Problem:  tests: test_popupwin fails (after v9.2.0319)
Solution: Regenerate the dump file (Yasuhiro Matsumoto).

The reference dump for Test_popupwin_opacity_wide_2 was not updated
when patch 9.2.0319 changed the blending behavior for double-width
characters at popup padding boundaries. The covered half of a
double-width character now correctly shows a space instead of the
full character.

related: #19881
closes:  #19934

Signed-off-by: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>