fix: shutdown method blocks until task executor shutdown completes

[jarebudev]

This PR

is to ensure the shutdown method waits until the task executor (which is a daemon thread) has either completed shutdown or the timeout period elapses.

Related Issues

Fixes #683

Notes

I set the period to wait for completion to 3 seconds

Follow-up Tasks

n/a

How to test

n/a

[codecov]

Codecov Report

Attention: Patch coverage is 14.28571% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 95.21%. Comparing base (dd671ad) to head (48a89fd).

Files	Patch %	Lines
...rc/main/java/dev/openfeature/sdk/EventSupport.java	14.28%	5 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #873      +/-   ##
============================================
- Coverage     95.41%   95.21%   -0.21%     
- Complexity      383      384       +1     
============================================
  Files            36       36              
  Lines           873      877       +4     
  Branches         52       53       +1     
============================================
+ Hits            833      835       +2     
- Misses           21       23       +2     
  Partials         19       19              

Flag	Coverage Δ
unittests	95.21% <14.28%> (-0.21%)	⬇️

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[beeme1mr]

Looks good, thanks @jarebudev. I'll leave this open for comment until tomorrow.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud