Updating Session code with PHP 8.1 features

[msmakouz]

Q	A
Bugfix?	❌
Breaks BC?	✔️
New feature?	❌
Issues	#512

[codecov]

Codecov Report

Merging #636 (740283f) into 3.0 (040234a) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                3.0     #636      +/-   ##
============================================
- Coverage     82.48%   82.46%   -0.02%     
+ Complexity     5764     5763       -1     
============================================
  Files           667      667              
  Lines         14418    14404      -14     
============================================
- Hits          11892    11878      -14     
  Misses         2526     2526              

Impacted Files	Coverage Δ
src/Framework/Session/SectionScope.php	24.32% <100.00%> (ø)
src/Session/src/Config/SessionConfig.php	100.00% <100.00%> (ø)
src/Session/src/Handler/FileHandler.php	100.00% <100.00%> (ø)
src/Session/src/Handler/NullHandler.php	100.00% <100.00%> (ø)
src/Session/src/Session.php	92.64% <100.00%> (-0.41%)	⬇️
src/Session/src/SessionFactory.php	100.00% <100.00%> (ø)
src/Session/src/SessionSection.php	100.00% <100.00%> (ø)

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