consider human attribute name for labels

[koenpunt]

I'm not sure if it's like this intentionally, but the human_attribute_name was only used when there are errors.

[bootstrap-ruby-bot]

	2 Warnings
⚠️	There are code changes, but no corresponding tests. Please include tests if this PR introduces any modifications in bootstrap_form's behavior.
⚠️	Please update CHANGELOG.md with a description of your changes. If this PR is not a user-facing change (e.g. just refactoring), you can disregard this.

Here's an example of a CHANGELOG.md entry (place it immediately under the * Your contribution here! line):

* [#565](https://github.com/bootstrap-ruby/bootstrap_form/pull/565): consider human attribute name for labels - [@koenpunt](https://github.com/koenpunt).

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[lcreid]

Thanks for the PR.

I'm afraid I have no idea whether the current behaviour was intentional. I'm guessing that the idea was that if nothing was specified in text, that we would rely on the behaviour of the underlying Rails label method.

Could you please add one or more test cases that show how this PR changes current behaviour?

[donv]

@koenpunt Do you have any examples where this change makes a difference? If not, I will close this PR.

[koenpunt]

It's been some time, but what I remember is that labels showed as the name of the label, so some for example "first_name" instead of the more human friendly "First name".

[donv]

@koenpunt Could you add a test case for this that shows the problem?

[UweKubosch]

@koenpunt Thanks for the PR! Could you add a test case that demonstrates the problem and rebase against main?