[BI-1761] Error message with the backend code

[dmeidlin]

Description

Story: BI-1761

The npm packages dompurify and @types/dompurify were added as project dependencies.
The component ErrorNotification was changed to sanitize the error message from the backend with calling dompurify and render the result as html.

Dependencies

bi-api:latest

Testing

Checklist:

• I have performed a self-review of my own code
• I have tested my code and ensured it meets the acceptance criteria of the story
• I have create/modified unit tests to cover this change
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to documentation
• I have run TAF: <link to TAF run>

[mlm483]

I recommend closing this PR and making the change in bi-api instead:

• Remove "<br/><br/>" from MISSING_OBS_UNIT_ID_ERROR in ExperimentProcessor.

EDIT:
I see the techspecs on the Jira card, but I don't think we should start treating error messages from bi-api as HTML just for this one line break.

I would take Shawn's suggested error message, and make the change on the backend. It's shorter, it can be a single line. https://breedinginsight.atlassian.net/browse/BI-1761?focusedCommentId=14200

[davedrp]

developer test PASSED

[dmeidlin]

I changed the message on the back end and created a new PR for bi-api, but I'm leaving the changes in place on the front end since they work with the existing messages and if rich messages are needed in the future, it won't break anything.