Entities set via services display undefined for triggering entity

[amaximus]

You may reproduce the issue with the following steps:

• create an input_text entity
• create an automation that sets the state of the input_text entity above via its set_value service

alias: "test bug"
initial_state: "on"
trigger:
:
action:
  - service: input_text.set_value
    data:
      entity_id: input_text.test_bug
      value: 'test text'

• adding this entity to the card displays triggering entity as 'undefined'

Result: triggering entity displayed as undefined (pls see attached screenshot).

Expected behaviour: in such cases either suppress 'undefined@' part or have something like 'hass@' or 'system@' instead.

[amaximus]

I guess line 881 [1] should be changed to something like:

var contentText = `${n.display_name} @ ${n.state}`;
if ( typeof `${n.display_name} == "undefined" ) {
   contentText = `hass @ ${n.state}`;
}

[1] https://github.com/gadgetchnnel/lovelace-home-feed-card/blob/5e381394613597f90b001baeaa427fd574ea134f/src/main.js#L881