[AAE-3467] - Fix Uploaded files are not being attached after selecting more files

[arditdomi]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x")

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation
• Other... Please describe:

What is the current behaviour? (You can also link to an open issue here)
https://alfresco.atlassian.net/browse/AAE-3467

What is the new behaviour?

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

[codecov-io]

Codecov Report

Merging #6506 (02a1a01) into develop (13faf4e) will increase coverage by 1.67%.
The diff coverage is 85.71%.

@@             Coverage Diff             @@
##           develop    #6506      +/-   ##
===========================================
+ Coverage    76.25%   77.93%   +1.67%     
===========================================
  Files          868      356     -512     
  Lines        19623     9742    -9881     
  Branches      3907     1964    -1943     
===========================================
- Hits         14964     7592    -7372     
+ Misses        3463     1547    -1916     
+ Partials      1196      603     -593     

Impacted Files	Coverage Δ
...ocument-list/components/document-list.component.ts	82.20% <85.71%> (-0.18%)	⬇️
...lib/process-comments/process-comments.component.ts	61.53% <0.00%> (-2.57%)	⬇️
...src/lib/app/services/apps-process-cloud.service.ts	72.00% <0.00%> (-1.08%)	⬇️
...-services-cloud/src/lib/app/mock/app-model.mock.ts	100.00% <0.00%> (ø)
...src/lib/app/components/app-list-cloud.component.ts	100.00% <0.00%> (ø)
.../lib/app/components/app-details-cloud.component.ts	100.00% <0.00%> (ø)
...k-filters/base-edit-task-filter-cloud.component.ts	72.00% <0.00%> (ø)
lib/core/services/jwt-helper.service.ts
lib/core/services/cookie.service.ts
lib/core/mock/alfresco-api.mock.ts
... and 511 more

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