fix(street-level): show a 359.6° bearing as 0°, not 360°

The Street Level viewer caption rounded the photo's bearing without
wrapping, so a view facing 359.5° or more read "360°". The rounded
bearing now wraps to 0°.

docs/CURRENT-STATE.md

@@ -3906,6 +3906,8 @@ reports it (`keyAlternatives`), and the panel's KEY REQUIRED, its coverage
 line and the layer row's tooltip say to light it. The
 viewer sits under the header with EXPAND, FIT/FILL and close above the
 image. SINCE is a stepped slider whose readout names the cut-off date.
+The viewer caption's bearing wraps after rounding to whole degrees, so a view
+facing 359.5° or more reads `0°` rather than `360°`.
 
 MapillaryJS loads on the first photo. Opening one frames it with a single
 camera flight through the application's deferred navigation (`begin` /