Fix scrolling getting broken when defining a custom onServerSearch function

[gnbm]

• This PR aims to fix the issue Scrolling is broken when a custom onServerSearch function Is defined #319
• When using dropdown with a custom onServerSearch function, when a user searches for a specific term, the scroll-down gets broken and all options disappear (tested using v1.0.42).

What was happening

• To replicate it:
  1. Open the screen with an example of the implementation impacted (here)
  2. Search for "a"
  3. Scroll down with either the mouse or the scrollbar
  4. Check that the dropdown doesn't work as expected

After the fix

• The fix was on the method setServerOptions()
• Fixed the issues that were being thrown by executing npm run validate
• Fixed vulnerabilities found by executing npm audit
• To replicate it:
  1. Open the screen with an example of the implementation impacted using the new file in the dist folder
  2. Search for "a"
  3. Scroll down with either the mouse or the scrollbar
  4. Check that the dropdown doesn't work as expected

Final validations

• Followed the same steps above - ✅
• Ran regression scenarios - ✅
• Run automated tests - ✅