Fix crash in Settings when Indonesian keyboard is installed

[prince-0408]

Fixes #573

This PR prevents a crash in Settings when the Indonesian keyboard is installed by safely handling missing language abbreviations.

[github-actions]

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[github-actions]

Maintainer Checklist

The following is a checklist for maintainers to make sure this process goes as well as possible. Feel free to address the points below yourself in further commits if you realize that actions are needed :)

• Tests for changes have been written and the CI unit test, linting and formatting workflows within the PR checks do not indicate new errors in the files changed

• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[andrewtavis]

praise: Thanks for the PR, @prince-0408! I think that the best thing to do for now is to disable the Indonesian keyboard as has been done with Danish and Norwegian. We can enable it when we start working on it again 😊

CC @catreedle for the change here 👋