Add button disable on submit for login grant

[Lukasdoe]

Fixes #33164

[Pytal]

@Lukasdoe we'll need a signoff on the commit as well, please refer to these steps on how to do that

[Lukasdoe]

Commit is signed-off.

[Lukasdoe]

@Pytal is there anything else I can do?

[artonge]

@Lukasdoe yes, could you rebase, compile and force push ? :)

Something like:

git rebase origin/master
npm ci
npm run build
git commit --amend
git push --force

[Lukasdoe]

Done. Build now failing, though. However, I guess that's not because of my change :)

[Pytal]

@Lukasdoe does the build still fail after syncing your fork first with the commands below?

git remote add upstream https://github.com/nextcloud/server.git
git pull --rebase upstream master
npm ci
npm run build
git commit --amend
git push --force

[artonge]

I only see unrelated failing CI, looks good to me :)

[Lukasdoe]

@Lukasdoe does the build still fail after syncing your fork first with the commands below?

git remote add upstream https://github.com/nextcloud/server.git
git pull --rebase upstream master
npm ci
npm run build
git commit --amend
git push --force

These are the exact steps I executed before the last force push^^

[szaimen]

CI failure unrelated

[welcome]

Thanks for your first pull request and welcome to the community! Feel free to keep them coming! If you are looking for issues to tackle then have a look at this selection: https://github.com/nextcloud/server/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22

[artonge]

Thanks for the PR @Lukasdoe !