message: feat(react): Make Profiler _mountSpan attribute protected
  Done for React Native SDK.
diff: @@ -86,10 +86,14 @@ export type ProfilerProps = {
  * spans based on component lifecycles.
  */
  class Profiler extends React.Component<ProfilerProps> {
  + /**
  + * The span of the mount activity
  + * Made protected for the React Native SDK to access
  + */
  + protected _mountSpan: Span | undefined = undefined;
  +
  // The activity representing how long it takes to mount a component.
  private _mountActivity: number | null = null;
  - // The span of the mount activity
  - private _mountSpan: Span | undefined = undefined;
  // eslint-disable-next-line @typescript-eslint/member-ordering
  public static defaultProps: Partial<ProfilerProps> = {
  