Placeholders on Dashboards not working on Apex Charts

[alvarolb]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Create a widget with ApexCharts and add some placeholders on the title, i.e. "Current rows: {{layout.row}}"

Expected behavior
Placeholders are replaced on Apex Charts. It works on other widgets. Apexcharts contains their own titles that are not being processed.

Screenshots
Example of Apex vs TimeSeries