Fix release build of TestAppKeyboard

Need to build for x86 instead of AnyCPU.

Change-Id: I59ebba934c20e19045e6a248b1bbe7e18b912efb
Fix crash with certain keyboards on Win8 (LT-15180)

We shouldn't add any IMs that aren't enabled. This solves the
crash.

This change also improves the information we get in case
ActivateKeyboard crashes. It now displays the content of the
fields of InputProcessorProfile.

Change-Id: I59170df2bb2fb9f891cb41aad11030727ab4931c