Update regex.match spec and code

[raskad]

It changes the following:

• Update regex.match spec and code.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	95,609	95,609	0
Passed	76,518	76,524	+6
Ignored	18,132	18,132	0
Failed	959	953	-6
Panics	0	0	0
Conformance	80.03%	80.04%	+0.01%

Fixed tests (6):

test/built-ins/RegExp/prototype/Symbol.match/get-flags-err.js [strict mode] (previously Failed)
test/built-ins/RegExp/prototype/Symbol.match/get-flags-err.js (previously Failed)
test/built-ins/RegExp/prototype/Symbol.match/flags-tostring-error.js [strict mode] (previously Failed)
test/built-ins/RegExp/prototype/Symbol.match/flags-tostring-error.js (previously Failed)
test/built-ins/RegExp/prototype/Symbol.match/get-unicode-error.js [strict mode] (previously Failed)
test/built-ins/RegExp/prototype/Symbol.match/get-unicode-error.js (previously Failed)

[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (89fd3be) 44.62% compared to head (1107e6a) 44.62%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3462      +/-   ##
==========================================
- Coverage   44.62%   44.62%   -0.01%     
==========================================
  Files         487      487              
  Lines       50541    50539       -2     
==========================================
- Hits        22554    22552       -2     
  Misses      27987    27987              

Files	Coverage Δ
boa_engine/src/builtins/regexp/mod.rs	62.68% <73.91%> (-0.13%)	⬇️

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[HalidOdat]

Looks good to me! :)