Custom element doesn't exist should be fix

[marcokreeft87]

Checklist

• Version is upped
• Info.md is up to date
• Unit tests coverage is 100 %

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (9d6ca65) 99.37% compared to head (71967d2) 100.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##           master      #274      +/-   ##
===========================================
+ Coverage   99.37%   100.00%   +0.62%     
===========================================
  Files          14        14              
  Lines         477       487      +10     
  Branches      193       194       +1     
===========================================
+ Hits          474       487      +13     
+ Misses          3         0       -3     

Files	Coverage Δ
src/index.ts	100.00% <100.00%> (+4.41%)	⬆️

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[github-actions]

☂️ Code Coverage

% Stmts	% Branch	% Funcs	% Lines
100 🟢	100 🟢	100 🟢	100 🟢

Click to expand

File	% Stmts	% Branch	% Funcs	% Lines
src
index.ts	100 🟢	100 🟢	100 🟢	100 🟢
entity.ts	100 🟢	100 🟢	100 🟢	100 🟢
util.ts	100 🟢	100 🟢	100 🟢	100 🟢
template.ts	100 🟢	100 🟢	100 🟢	100 🟢
hide.ts	100 🟢	100 🟢	100 🟢	100 🟢
src/lib
seconds_to_duration.ts	100 🟢	100 🟢	100 🟢	100 🟢
format_number.ts	100 🟢	100 🟢	100 🟢	100 🟢
constants.ts	100 🟢	100 🟢	100 🟢	100 🟢
compute_state_display.ts	100 🟢	100 🟢	100 🟢	100 🟢
format_date.ts	100 🟢	100 🟢	100 🟢	100 🟢
format_date_time.ts	100 🟢	100 🟢	100 🟢	100 🟢
use_am_pm.ts	100 🟢	100 🟢	100 🟢	100 🟢
format_time.ts	100 🟢	100 🟢	100 🟢	100 🟢
src/types
room-card-types.ts	100 🟢	100 🟢	100 🟢	100 🟢