Real time line drawing, line shaking

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## Environment

- Xcode version: Version 14.3.1 (14E300c)
- iOS version: ios 16
- Devices affected:
- Maps SDK Version:

When using SDK to draw the route of a small car for real-time display, there is often shaking of the line.

```
let idStr: String = xunBianIdentifer + "_" + num
let sourceIder = geoJSONDataSourceXunBianLineIdentifier + num

let feature: Feature = Feature(geometry: LineString(coorLists))
let featureCollection = FeatureCollection(features: [feature])
var geoJSONSource = GeoJSONSource()
geoJSONSource.data = .featureCollection(featureCollection)
geoJSONSource.lineMetrics = true

var lineLayer = LineLayer(id: idStr)
lineLayer.source = sourceIder

lineLayer.lineColor = .constant(StyleColor(routeXunbianLine_color))
lineLayer.lineWidth = .constant(1)
lineLayer.lineCap = .constant(.round)
lineLayer.lineJoin = .constant(.round)
```

Start with the reported real-time route drawing setup, especially the GeoJSONSource and LineLayer configuration shown in the issue, and reproduce the shaking on Xcode 14.3.1 with iOS 16. Investigate the line updates and rendering behavior; done means identifying the cause and producing a stable real-time line, with the affected device and Maps SDK version documented.

Written by the indexing model from the issue text.