Add early errors for LexicalDeclaration

[raskad]

This Pull Request fixes/closes #3206.

It changes the following:

• Add early errors for LexicalDeclaration

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	95,282	95,282	0
Passed	75,036	75,036	0
Ignored	19,220	19,220	0
Failed	1,026	1,026	0
Panics	0	0	0
Conformance	78.75%	78.75%	0.00%

[codecov]

Codecov Report

Merging #3207 (f58311d) into main (3a6715a) will increase coverage by 0.01%.
The diff coverage is 72.72%.

@@            Coverage Diff             @@
##             main    #3207      +/-   ##
==========================================
+ Coverage   50.43%   50.44%   +0.01%     
==========================================
  Files         436      436              
  Lines       42531    42542      +11     
==========================================
+ Hits        21450    21461      +11     
  Misses      21081    21081              

Files Changed	Coverage Δ
...parser/src/parser/statement/declaration/lexical.rs	70.50% <72.72%> (+2.53%)	⬆️

[Razican]

Thanks!