Fix anonymous function name in cover assignment

[raskad]

This Pull Request changes the following:

• Fix anonymous function name in cover assignment

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	95,574	95,574	0
Passed	75,193	75,195	+2
Ignored	19,482	19,482	0
Failed	899	897	-2
Panics	0	0	0
Conformance	78.68%	78.68%	+0.00%

Fixed tests (2):

test/language/expressions/assignment/fn-name-lhs-cover.js [strict mode] (previously Failed)
test/language/expressions/assignment/fn-name-lhs-cover.js (previously Failed)

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (70ee050) 49.72% compared to head (b1eff9d) 49.72%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3325      +/-   ##
==========================================
- Coverage   49.72%   49.72%   -0.01%     
==========================================
  Files         443      443              
  Lines       43378    43378              
==========================================
- Hits        21570    21569       -1     
- Misses      21808    21809       +1     

Files	Coverage Δ
boa_parser/src/parser/expression/assignment/mod.rs	77.87% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[HalidOdat]

Nice Catch! :)