ROU-11487: Fix event for when sidebar starts open

[rugoncalves]

This PR is for fixing a misbehavior when the sidebar starts open.

What was happening

• When the sidebar starts open
• And has overlay (meaning, can be closed with click outside of it)
• The events to intercept the click and close the sidebar were not being added:
  
  (notice, the private method _openSidebar() is invoked by the method _setInitialCssClasses() within the method build())

What was done

• The code that adds the event was removed from the if that checks if the sidebar is already built:
  

Test Steps

1. Go to test page
2. Open the sidebar
3. Click on the overlay

Screenshots

Checklist

• tested locally
• documented the code
• clean all warnings and errors of eslint
• requires changes in OutSystems (if so, provide a module with changes)
• requires new sample page in OutSystems (if so, provide a module with changes)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud