[Bug] Error key is present twice in the base.php lang file

[tabacitu]

Bug report

What I did

Generated an operatino with a button using DevTools. Inside it, it was using trans('backpack::base.error') which we have been providing for a long time.

What I expected to happen

Werk.

What happened

No werk, because:

Basically, before 1f734e4 we already had an error key which translated to Error. Now, that's being overridden by the error key that @promatik added, which provides an array 🤦‍♂️

So when you do trans('backpack::base.error') and expect a string... no bueno... you get an array now. So we've pretty much introduced a bug with that PR. We didn't notice that the string already existed.

What I've already tried to fix it

Nothing it. Because the problem is... we have to choose one to keep. Tbh since this one is newer, I would keep the old one as error and rename the new array as error_page or something. But we have to do that inside all themes 🤦‍♂️

[promatik]

Ouch! I didn't know about that error key ...
I'll rename error to error_page 👌

[promatik]

Fixed here; #5316