fix(autocomplete): click on 2nd autocomplete, 1st panel should be closed

[atlwendy]

closes #1671

[codecov]

Codecov Report

Merging #1673 into release will decrease coverage by 0.01%.
The diff coverage is 90%.

@@             Coverage Diff             @@
##           release    #1673      +/-   ##
===========================================
- Coverage    95.54%   95.53%   -0.02%     
===========================================
  Files          127      127              
  Lines         4850     4860      +10     
  Branches       809      812       +3     
===========================================
+ Hits          4634     4643       +9     
- Misses         216      217       +1

Impacted Files	Coverage Δ
...tocomplete-panel/autocomplete-trigger.directive.ts	87.79% <90%> (+0.09%)	⬆️

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