Resolve "don't show temperature chart part of chart when temp not tracked"

components/chart/chart-legend.js

@@ -1,4 +1,5 @@
 import React from 'react'
+import PropTypes from 'prop-types'
 import { View } from 'react-native'
 
 import AppText from '../app-text'
@@ -9,9 +10,9 @@ import { cycleDayColor } from '../../styles'
 
 import { shared as labels } from '../../i18n/en/labels'
 
-const ChartLegend = () => {
+const ChartLegend = ({ xAxisHeight }) => {
   return (
-    <View style={[styles.yAxis, styles.chartLegend]}>
+    <View style={[styles.yAxis, styles.chartLegend, {height: xAxisHeight}]}>
       <DripHomeIcon
         name="circle"
         size={styles.yAxis.width - 7}
@@ -24,4 +25,8 @@ const ChartLegend = () => {
   )
 }
 
+ChartLegend.propTypes = {
+  xAxisHeight: PropTypes.number.isRequired
+}
+
 export default ChartLegend