[ML] Anomaly explorer - spaces in event name are not displayed correctly in tooltip

[pheyos]

Found in version

• 7.9.0-bc9

Browser

• Chrome

Steps to reproduce

• Run a job with associated calendar event
• Open the tooltip for a skipped anomaly in an anomaly explorer chart

Expected result

• The tooltip shows the event name correctly

Actual result

• The tooltip doesn't display spaces in the event name correctly:
  

Additional information

• In the single metric viewer, the tooltip displays the event name correctly:
  

[elasticmachine]

Pinging @elastic/ml-ui (:ml)