fix(parser): dont process nested tags as string if parent is not allowed

[JiLiZART]

No description provided.

[codecov]

Codecov Report

Merging #84 (41390d4) into master (0d839fa) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #84      +/-   ##
==========================================
+ Coverage   93.55%   93.63%   +0.07%     
==========================================
  Files          15       15              
  Lines         590      597       +7     
  Branches      132      135       +3     
==========================================
+ Hits          552      559       +7     
  Misses         32       32              
  Partials        6        6              

Impacted Files	Coverage Δ
packages/bbob-parser/src/parse.js	94.62% <100.00%> (+0.37%)	⬆️
packages/bbob-plugin-helper/src/TagNode.js	79.31% <100.00%> (+0.73%)	⬆️

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