fix(collapse): fix wrong display value DO NOT MERGE

[IlyaSurmay]

BREAKS ACCORDION, DO NOT MERGE
Fixes #3032
Fixes #2473

PR Checklist

Before creating new PR, please take a look at checklist below to make sure that you've done everything that needs to be done before we can merge it.

• read and followed the CONTRIBUTING.md guide.
• built and tested the changes locally.
• added/updated tests.

[codecov]

Codecov Report

Merging #3401 into development will decrease coverage by 0.03%.
The diff coverage is 57.14%.

@@               Coverage Diff               @@
##           development    #3401      +/-   ##
===============================================
- Coverage        65.03%   64.99%   -0.04%     
===============================================
  Files              210      210              
  Lines             5691     5694       +3     
  Branches          1000     1004       +4     
===============================================
  Hits              3701     3701              
  Misses            1724     1724              
- Partials           266      269       +3

Impacted Files	Coverage Δ
src/collapse/collapse.directive.ts	90.47% <57.14%> (-6.96%)	⬇️

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