Dynamic Chart options grow unrestricted

[Steve-Mcl]

Current Behavior

If every chart input payload contains ui_update.chartOptions, the internal dynamicChartOptions array grows uncontrolled.

This will eventually affect UX due to how they are looped...

                        this.dynamicChartOptions.forEach((options) => {
                            this.chart.setOption(options)
                        })

Expected Behavior

should consolidate options array

Steps To Reproduce

send a lot of messages with the controlOptions set (even if they contain the exact same option value)

Environment

• Dashboard version: latest/live
• Node-RED version:
• Node.js version:
• npm version:
• Platform/OS:
• Browser:

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