Color Calibration: Clearer WB error message

[Donatzsky]

A common issue for new users is that they see the white balance module error message in Color Calibration and freak out because they think something is broken. This rewords it to bad input white balance, which makes it clearer that the White Balance module has in fact not malfunctioned, but rather that it is not configured correctly.

The corresponding error in White Balance could probably also be improved, but it's not too bad, and so far I haven't been able to come up with anything better.

Related: #19374 (comment)

[anoderay]

I honestly don't think "bad input white balance" is less obscure. Especially because there is no module named "input white balance".

The most descriptive message I can think of would be "white balance not set as shot to reference". That is wordy though...

[Donatzsky]

It's input relative to CC, which admittedly may not be super obvious. I would still argue that it's better than the current situation. But after making this PR I was thinking bad initial white balance could be an option as well. Or, if the White Balance module is renamed, bad raw white balance.

"white balance not set as shot to reference" is not bad, though. Certainly clear. Remove the "set": white balance not as shot to reference. However, "camera reference" is also a valid WB setting, so that would not be entirely correct.

[anoderay]

bad raw white balance IMHO implies a technical error with the file. Though I like the brevity and it invokes the idea to finally rename white balance to "raw white balance".

white balance not as shot to reference would be my favourite.

@kofa73 has also put a lot of thought into wb/cc, what do you say?

[kofa73]

Please consider #20304 - Hanno likes it, and if that lands, 'white balance not set as shot to reference' will not be the proper message.