fix(tooltip): only show tooltip that has value

[ghiscoding]

• the previous code was having a simple check of the final output text, however when using DOMPurify it returns a TrustedHTML object which is considered defined even though it could be empty.
• we can fix the issue via 2 changes (1. sanitize only string value, 2. check tooltip value against toString()

[stackblitz]

Run & review this pull request in StackBlitz Codeflow.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.8%. Comparing base (94b836a) to head (519022f).
Report is 1 commits behind head on next.

Additional details and impacted files

@@          Coverage Diff           @@
##            next   #1511    +/-   ##
======================================
  Coverage   99.8%   99.8%            
======================================
  Files        198     198            
  Lines      21616   21616            
  Branches    6946    7217   +271     
======================================
  Hits       21552   21552            
+ Misses        64      58     -6     
- Partials       0       6     +6     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.