> There was an issue around the time of Qt 4.6 when placeholder text was
> introduced, that caused a compile failure when it was specified in the
> form. As a workaround the placeholder texts were moved to the code.
> Qt 4 hasn't been relevant to us for ages. So move all (non-parametrized)
> placeholder texts to the form files instead.
The change to `openuridialog.cpp/.ui` is not included, because it is parametrized:
the placeholder text can be `bitcoincash:` or `bchtest:` or `bchreg:`
This is a backport of Core PR17702