[ML] Single metric viewer - anomalies paging controls positioned too far on the right

[pheyos]

Found in version

• 7.7.0-bc6

Browser

• Chrome

Steps to reproduce

• Open a job in the single metric viewer

Expected result

• The anomalies table paging controls are positioned correctly. Particularly, there's some space between the controls and the right end of the page.

Actual result

• The paging controls are positioned too far on the right:
  

Additional information

• In the anomaly explorer the paging controls are positioned correctly:
  

[elasticmachine]

Pinging @elastic/ml-ui (:ml)