[AAE-4661] Fix search results are still displayed when search term ge…

[arditdomi]

…ts deleted

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-4661

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 #6707 (a5d9a6a) into develop (f6308a7) will increase coverage by 2.23%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #6707      +/-   ##
===========================================
+ Coverage    76.39%   78.63%   +2.23%     
===========================================
  Files          882      211     -671     
  Lines        20007     5720   -14287     
  Branches      3965     1161    -2804     
===========================================
- Hits         15285     4498   -10787     
+ Misses        3512      888    -2624     
+ Partials      1210      334     -876     

Impacted Files	Coverage Δ
.../content-services/src/lib/dialogs/dialog.module.ts
...s/activities/diagram-box-publish-task.component.ts
...b/core/info-drawer/info-drawer-layout.component.ts
...vices/src/lib/mock/document-list.component.mock.ts
...ectives/custom-no-permission-template.directive.ts
...ns/diagram-icon-alfresco-publish-task.component.ts
lib/core/models/component.model.ts
...ib/content-services/src/lib/audit/audit.service.ts
lib/insights/src/lib/diagram/diagram.module.ts
...templates/error-content/error-content.component.ts
... and 661 more

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