[Bug 48819] New: user32:win "unexpected 0x0282" message" Japanese Windows 10 failures

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48819

Bug ID: 48819
           Summary: user32:win "unexpected 0x0282" message" Japanese
                    Windows 10 failures
           Product: Wine
           Version: unspecified
          Hardware: x86
                OS: Windows
            Status: NEW
          Severity: major
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]

The TestBot's w1064v1809-zh_CN configuration runs the tests on Windows 10 1809
in a Chinese locale. This test configuration gets unique and systematic
failures in user32:win:

win.c:3852: Test failed: hwnd 01E40500 message 0282
win.c:3858: Test failed: message 0282 available
win.c:3931: Test failed: hwnd 01E40500/00390448 message 0282
win.c:3934: Test failed: hwnd 01E40500/00390448 message 0282

Message 0x0282 is WM_IME_NOTIFY so this looks like a legitimate message given
the locale, one that was just not foreseen by the user32:win test.

See: https://test.winehq.org/data/tests/user32:win.html

However note that quite often WineTest fails to submit its results to
test.winehq.org, typically because it times out. So you can more easily find
the latest failure by looking for the "32 bit WineTest: base VMs" jobs on the
TestBot.

Finally, three of these messages include the window handles which means they
are "always new". Because of this the TestBot will mistakenly attribute the
failure to any user32 patch submitted to wine-devel, which should cause them to
be rejected. So I bumped the priority on this bug.