Search: Inappropriate aria-label provided to the input

Issue Summary

Inappropriate aria-label provided to the seach input

Steps to Reproduce

1. Navigate to the confluence with screen reader 
2. Navigate to the search input inside header
3. Observe the label announced by screen reader.

Actual Results

The search input field inside header section has inappropriate aria-label as " Type 'g' then 'g' OR '/'". 

This makes it difficult for screen reader users to understand the purpose of the input. 

Screenshot

Expected Results

The search input should have clear & descriptive label.

Update aria-label to "Search" 

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available