Fix/parameter select

[alfredorubin96]

FIxing:

1. When initialising the selector in multi mode, it was pushing also an empty string in the list of values
2. when clearing the list, the values weren't casted to string

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 37.50000% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 38.55%. Comparing base (20e4e0a) to head (9dcb8a2).
Report is 94 commits behind head on develop.

Files	Patch %	Lines
...arameter/component/NodePropertyParameterSelect.tsx	37.50%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #794      +/-   ##
===========================================
- Coverage    39.07%   38.55%   -0.53%     
===========================================
  Files          208      211       +3     
  Lines         8721     8858     +137     
  Branches      2598     2644      +46     
===========================================
+ Hits          3408     3415       +7     
- Misses        5252     5385     +133     
+ Partials        61       58       -3     

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