After commit 52ec5094f, we started to get a warning when running out
test suite:
```
WARNING: The #<Class:0x00007958c06fb8e0> component rendered HTML-unsafe
output. The output will be automatically escaped, but you may want to
investigate.
```
The reason is that, for security reasons, since version 3.9.0,
ViewComponent no longer renders unsafe output in the `call` method, so
we need to make sure the rendered text is safe. This is similar to what
Rails automatically does in views with `<%= %>`.
While this change doesn't affect the application (this class is only
used in a test), with it we avoid the warning.
In the `i18n_translation` initializer, we're overwriting the `t` helper
so calling it uses custom translations if they're available.
However, ViewComponent doesn't use the `t` helper but implements its own
`t` method. So, when calling the `t` method in a component, we weren't
using our implementation of the `t` helper, and so we weren't loading
custom translations.
Using the `t` helper in components solves the issue.
There was a test where we were directly testing a method in a component,
and that method uses the `t` helper. This caused an error when running
the test:
ViewComponent::Base::ViewContextCalledBeforeRenderError:
`#helpers` can't be used during initialization, as it depends on the
view context that only exists once a ViewComponent is passed to the
Rails render pipeline.
Using `render_inline` in the test and testing the generated HTML, as
recommended in the ViewComponent documentation, solves the issue.
