Fix working hours over the schedule events rendering (#4113)

# What this PR does

Fixes working hours rendering

## Which issue(s) this PR closes


## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required)
- [ ] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

grafana-plugin/src/components/WorkingHours/WorkingHours.tsx

@@ -54,7 +54,7 @@ export const WorkingHours: FC<WorkingHoursProps> = (props) => {
               key={index}
               x={`${duration > 0 ? (start * 100) / duration : 0}%`} // x/0 is NaN
               y={0}
-              width={`${duration > 0 ? (diff * 100) / duration : 0} %`} // x/0 is NaN
+              width={`${duration > 0 ? (diff * 100) / duration : 0}%`} // x/0 is NaN
               height="100%"
               fill={light ? 'url(#stripes_light)' : 'url(#stripes)'}
             />