message: fix(tracing): Report the right units for CLS and TTFB
  ttfb.requestTime is multiplied times 1000 and is documented in a code comment as ms
  Cumulative Layout Shift does not have a unit. A layout cannot shift by 10 milliseconds
diff: @@ -50,7 +50,7 @@ function _trackCLS(): void {
  }
  __DEBUG_BUILD__ && logger.log('[Measurements] Adding CLS');
  - _measurements['cls'] = { value: metric.value, unit: 'millisecond' };
  + _measurements['cls'] = { value: metric.value, unit: 'none' };
  _clsEntry = entry as LayoutShift;
  });
  }
  @@ -172,7 +172,7 @@ export function addPerformanceEntries(transaction: Transaction): void {
  // This is the time between the start of the request and the start of the response in milliseconds.
  _measurements['ttfb.requestTime'] = {
  value: (responseStartTimestamp - requestStartTimestamp) * 1000,
  - unit: 'second',
  + unit: 'millisecond',
  };
  }
  }
  