Fix calendar parsing

[DGoiana]

Closes #899
Fixed a &nbsp error in the calendar parsing

Review checklist

• Terms and conditions reflect the current change
• Contains enough appropriate tests
• If aimed at production, writes a new summary in whatsnew/whatsnew-pt-PT
• Properly adds an entry in changelog.md with the change
• If PR includes UI updates/additions, its description has screenshots
• Behavior is as expected
• Clean, well-structured code

[codecov]

Codecov Report

Merging #924 (9087e05) into develop (86a2078) will decrease coverage by 0%.
Report is 1 commits behind head on develop.
The diff coverage is 0%.

Additional details and impacted files

@@          Coverage Diff           @@
##           develop   #924   +/-   ##
======================================
- Coverage       22%    22%   -0%     
======================================
  Files          136    136           
  Lines         3536   3539    +3     
======================================
  Hits           759    759           
- Misses        2777   2780    +3     

[bdmendes]

This should be done at the parser level, imo

[bdmendes]

There is no need to create multiple auxiliary variables to filter the collection. Inlining will make this easier to read

The merge-base changed after approval.