Remove "Switch To" tooltip from top nav

• Requirements (issue)
• Tasks (epic)
• Full Context Spike MR (permanent draft)
• All MR Parts...
  • Remove "Switch To" tooltip from top nav

What does this MR do?

This MR removes the "Switch To" tooltip from the upcoming combined top nav menu, based on requirements of #331466 (closed).

Screenshots (strongly suggested)

How to test?

• Enable the feature flag :combined_menu
• Hover over the "Menu" button in the top nav bar

Before (on master)	After (this MR)

Does this MR meet the acceptance criteria?

Conformity

• I have included a changelog entry, or it's not needed. (Does this MR need a changelog?)
• I have added/updated documentation, or it's not needed. (Is documentation required?)
• I have properly separated EE content from FOSS, or this MR is FOSS only. (Where should EE code go?)
• I have added information for database reviewers in the MR description, or it's not needed. (Does this MR have database related changes?)
• I have self-reviewed this MR per code review guidelines.
• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
• I have followed the style guides.

Availability and Testing

• I have added/updated tests following the Testing Guide, or it's not needed. (Consider all test levels. See the Test Planning Process.)

References

• Closes #331466 (closed)