[ACA-3603] Destination picker is not opening on My Files when clicking on Attach file widget

[sivakumar414ram]

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://issues.alfresco.com/jira/browse/ACA-3603

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-commenter]

Codecov Report

Merging #5865 into develop will increase coverage by 2.02%.
The diff coverage is 50.00%.

@@             Coverage Diff             @@
##           develop    #5865      +/-   ##
===========================================
+ Coverage    76.41%   78.43%   +2.02%     
===========================================
  Files          845      334     -511     
  Lines        18738     8986    -9752     
  Branches      3714     1799    -1915     
===========================================
- Hits         14318     7048    -7270     
+ Misses        3300     1387    -1913     
+ Partials      1120      551     -569     

Impacted Files	Coverage Δ
...ntent-node-selector/content-node-dialog.service.ts	75.86% <0.00%> (-1.34%)	⬇️
.../src/lib/site-dropdown/sites-dropdown.component.ts	88.13% <ø> (ø)
...ontent-widget/attach-file-widget-dialog.service.ts	92.30% <ø> (ø)
...lib/content-widget/attach-file-widget.component.ts	70.78% <100.00%> (ø)
...atable/components/date-cell/date-cell.component.ts
lib/core/services/user-preferences.service.ts
...re/form/components/widgets/core/container.model.ts
...core/directives/version-compatibility.directive.ts
...m/components/icons/diagram-icon-error.component.ts
...e/form/components/widgets/core/form-field.model.ts
... and 505 more

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[eromano]

Why do we need it? if you have -my- it should already open to my