LineGraph is not showing up in CombinedChart

## What did you do?
Nothing

## What did you expect to happen?
It should be showing an Linegraph

## What happened instead?
it's not displaying the line

## Charts Environment

**Charts version/Branch/Commit Number:** 4.0.3
**Xcode version: 13.3.1
**Swift version: 5.0
**Platform(s) running Charts: iOS
**macOS version running Xcode:*

This is the expected behaviour:

But I realized that when the entries is not completing all the period for the chart is not drawing the line