keep fidelity with refactored class component

x-pack/plugins/observability_solution/infra/public/components/logging/log_minimap/log_minimap.tsx

@@ -15,7 +15,7 @@ import moment from 'moment';
 import * as React from 'react';
 import { css } from '@emotion/react';
 import { useEuiTheme } from '@elastic/eui';
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 import { DensityChart } from './density_chart';
 import { HighlightedInterval } from './highlighted_interval';
 import { SearchMarkers } from './search_markers';
@@ -58,11 +58,16 @@ export const LogMinimap = ({
   summaryBuckets,
   summaryHighlightBuckets,
   width,
-  target,
+  target: initialTarget,
 }: LogMinimapProps) => {
   const [timeCursorY, setTimeCursorY] = useState<number>(0);
+  const [target, setTarget] = useState<number | null>(initialTarget);
   const theme = useEuiTheme();
 
+  useEffect(() => {
+    setTarget(initialTarget);
+  }, [initialTarget]);
+
   const handleClick: React.MouseEventHandler<SVGSVGElement> = (event) => {
     const minimapTop = event.currentTarget.getBoundingClientRect().top;
     const clickedYPosition = event.clientY - minimapTop;