Add avatar icon as login property w/ default.

[mjarosch]

This is a pull request for issue #9916. It adds an avatarIcon property to the Login component w/ a default of the Lock icon. This allows for overriding the icon without having to copy the complete component.

Ideally, this would be included as part of a v4 point release. This is my first pull request, so please let me know if there is anything else needed.

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Fix #9916

[slax57]

Thanks for the PR, which I approve.

However, since this is a new feature, it needs to target the next branch. Can you rebase?

As a reminder, React Admin v4 is now feature-freeze, which means this new feature will have to be released with React Admin v5.

Thanks again for your contribution!

[mjarosch]

@slax57 Branch has been rebased.

[djhi]

Would you mind adding a story for it? We don't have any for this component so take inspiration from the Logout.stories.tsx. Thanks!

[slax57]

It seems your branch now includes too many commits. Looks like you messed up the rebase 😬 . Can you fix the branch? 🙏

[mjarosch]

@slax57 Not sure what happened, but the branch has been cleaned up. I still plan on getting a story added for this, I just have been busy and haven't had time to get to it.

[slax57]

No worries, we'll wait on the story then. Thanks!

[mjarosch]

@slax57 @djhi Sorry for taking so long to get the stories added. Everything should be ready now. Thanks!