[BUG] Charts dynamic options does not work for bug

Expected behavior

When I have a mdbCharts and I update the options passed dynamically (for example with an async pipe) I expect the chart to update correctly with the new configuration.

Actual behavior

I get the reported error instead. I thinks there is an evident bug inside the directive: when it calls rebuild() in order to update the options the method _destroyChart does set _chart to null but does not update the _isInitialized that should be set to false in order to rebuild the chart.

Resources (screenshots, code snippets etc.)

core.mjs:6494 ERROR TypeError: Cannot set properties of null (setting 'options')
at set options [as options] (mdb-angular-ui-kit-charts.mjs:278:13)
at setInputsForProperty (core.mjs:11016:1)
at elementPropertyInternal (core.mjs:10037:1)
at ɵɵproperty (core.mjs:14483:1)
at DefaultGraphComponent_Template (defaultgraph.component.html:2:35)
at executeTemplate (core.mjs:9632:1)
at refreshView (core.mjs:9495:1)
at refreshComponent (core.mjs:10692:1)
at refreshChildComponents (core.mjs:9291:1)
at refreshView (core.mjs:9545:1)