I just tried the following with a random Maven project (TrackMate-TrackAnalysis):

• update parent pom-scijava:

  <version>28.0.0</version>
  

• add a scijava.coding-style property:

  <scijava.coding-style>imglib2</scijava.coding-style>
  

• run mvn formatter:format

It doesn't seem to make a difference whether I put imglib2 or scijava, the formatting will always remove spaces around parentheses and introduce line breaks for long lines.
It looks to me like the imglib2 style formatting is not working at all.