when Zoomed In ,The x-axis shows the duplicate values.Getting correct value initially ,but when start to zoom graph, some values on the X-axis becomes identical

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## What did you do?

self.lineChartView.setVisibleXRange(minXRange: 2, maxXRange: Double(dataPoints.count))
self.lineChartView.xAxis.granularityEnabled = true
self.lineChartView.xAxis.granularity = 1

## What did you expect to happen?

ℹ Please replace this with what you expected to happen.

## What happened instead?

ℹ Please replace this with of what happened instead.

## Charts Environment

**Charts version/Branch/Commit Number:**
**Xcode version:**
**Swift version:**
**Platform(s) running Charts:**
**macOS version running Xcode:**

## Demo Project

ℹ Please link to or upload a project we can download that reproduces the issue.

Start by reproducing the issue in an iOS Charts demo using setVisibleXRange with xAxis granularity enabled, then inspect the zoom behavior and x-axis label generation. Done means zooming no longer produces duplicate x-axis values; the issue provides no named source file or test to target.

Written by the indexing model from the issue text.