(fix) Fix error when clearing the test type field of the lab order form

[makombe]

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[denniskigen]

Hey, @makombe, I've pushed a couple other commits to your PR that do the following:

• Rename the LabOrderForm component to use the .component suffix. This is so that it gets added to the list of files that i18next-parser extracts translation strings from.
• Owing to the change made above, updating translations for the lab order form.
• Committing some orphaned changes to translations in the forms app.