fix(react): added aria-hidden fallback for decorative icons

[jguddas]

What is the purpose of this pull request?

• New Icon
• Bug fix
• New Feature
• Documentation update
• Other: Fixing an accessibility nuisance

Description

When you use an icon without a label <Square/> it will be read out by a lot of screen readers as Image.
After asking some people including screen reader users it looks like this is just a nuisance and having icons that don't have a label be hidden by default is the way to go.

Related to #2121.

Before Submitting

• I've read the Contribution Guidelines.
• I've checked if there was an existing PR that solves the same issue.

[karsa-mistmere]

Nice job on the implementation, however, I do have three concerns to raise:

1. There are some linting issues that need to be fixed.

2. While, as we've privately discussed, I'm in support of adding this functionality exactly as implemented, I think we should add it to every package where possible, not just lucide-react (most of them should be pretty straightforward with how you've implemented this).

3. This is definitely something that we should explicitly document in our guide. Possibly the Accessibility guide in feat(docs): added accessibility guide #2122, but probably also relevant package documentations.