[ML] Adds isRequired where applicable to timeseries_chart props. (#26880)

Adds isRequired to timeseries_chart props to match the minimum required props necessary to render the component without errors reflected in the Minimal initialization test.

x-pack/plugins/ml/public/timeseriesexplorer/timeseries_chart.js

@@ -79,19 +79,19 @@ export class TimeseriesChart extends React.Component {
     contextAggregationInterval: PropTypes.object,
     contextChartData: PropTypes.array,
     contextForecastData: PropTypes.array,
-    contextChartSelected: PropTypes.func,
+    contextChartSelected: PropTypes.func.isRequired,
     detectorIndex: PropTypes.string,
     focusAggregationInterval: PropTypes.object,
     focusChartData: PropTypes.array,
     focusForecastData: PropTypes.array,
-    modelPlotEnabled: PropTypes.bool,
-    renderFocusChartOnly: PropTypes.bool,
+    modelPlotEnabled: PropTypes.bool.isRequired,
+    renderFocusChartOnly: PropTypes.bool.isRequired,
     selectedJob: PropTypes.object,
-    showForecast: PropTypes.bool,
-    showModelBounds: PropTypes.bool,
-    svgWidth: PropTypes.number,
+    showForecast: PropTypes.bool.isRequired,
+    showModelBounds: PropTypes.bool.isRequired,
+    svgWidth: PropTypes.number.isRequired,
     swimlaneData: PropTypes.array,
-    timefilter: PropTypes.object,
+    timefilter: PropTypes.object.isRequired,
     zoomFrom: PropTypes.object,
     zoomTo: PropTypes.object
   }

x-pack/plugins/ml/public/timeseriesexplorer/timeseries_chart.test.js

@@ -37,6 +37,7 @@ function getTimeseriesChartPropsMock() {
   return {
     contextChartSelected: jest.fn(),
     modelPlotEnabled: false,
+    renderFocusChartOnly: false,
     showForecast: true,
     showModelBounds: true,
     svgWidth: 1600,