Remove defaultProps from TimelineRow.tsx (#2616)

## Which problem is this PR solving?
- Part of #2596 

## Description of the changes
- 

## How was this change tested?
- 

## Checklist
- [ ] I have read
https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
- [ ] I have signed all commits
- [ ] I have added unit tests for the new functionality
- [ ] I have run lint and test steps successfully
  - for `jaeger`: `make lint test`
  - for `jaeger-ui`: `npm run lint` and `npm run test`

Signed-off-by: cs-308-2023 <[email protected]>

packages/jaeger-ui/src/components/TracePage/TraceTimelineViewer/TimelineRow.tsx

@@ -28,21 +28,15 @@ interface ITimelineRowCellProps extends React.HTMLAttributes<HTMLDivElement> {
   style?: object;
 }
 
-export default function TimelineRow(props: TTimelineRowProps) {
-  const { children, className = '', ...rest } = props;
+export default function TimelineRow({ children, className = '', ...rest }: TTimelineRowProps) {
   return (
     <div className={`flex-row ${className}`} {...rest}>
       {children}
     </div>
   );
 }
 
-TimelineRow.defaultProps = {
-  className: '',
-};
-
-function TimelineRowCell(props: ITimelineRowCellProps) {
-  const { children, className = '', width, style, ...rest } = props;
+function TimelineRowCell({ children, className = '', width, style = {}, ...rest }: ITimelineRowCellProps) {
   const widthPercent = `${width * 100}%`;
   const mergedStyle = { ...style, flexBasis: widthPercent, maxWidth: widthPercent };
   return (
@@ -52,6 +46,4 @@ function TimelineRowCell(props: ITimelineRowCellProps) {
   );
 }
 
-TimelineRowCell.defaultProps = { className: '', style: {} };
-
 TimelineRow.Cell = TimelineRowCell;