secondaryinfo-entity-row causes severe load, leading to blocking the event loop

[nagyrobi]

See: home-assistant/core#89047 (comment)

Had to remove the few secondaryinfo-entity-row entries rendering templates I had in Lovelace.

[nagyrobi]

#47
#16

[ildar170975]

I am using this row only to display static labels, like:

- type: custom:secondaryinfo-entity-row
  entity: sun.sun
  secondary_info: Life is beautiful

or

- type: custom:secondaryinfo-entity-row
  entity: sun.sun
  secondary_info: <h style='color:red'>Life is beautiful</h>

As far as I understood, the possible reason could be using templates for the secondary_info option.
But in my case it is a static text.
Does it make a difference?

[bdraco]

It needs to subscribe to the template instead of polling

[bdraco]

https://github.com/thomasloven/lovelace-card-tools#subscriberendertemplateconn-onchange-params--cardtoolssubscriberendertemplate