fix: Error when viewing text component in RAW HTML

[Faraz32123]

Ticket: TNL-11959

• This PR fixes the error when viewing text component in RAW HTML as lang was passed undefined and CODEMIRROR_LANGUAGES[lang]() was throwing this: TypeError: Ap[i] is not a function

Before:

After:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.78%. Comparing base (dbb1a99) to head (f382ace).
Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #1869    +/-   ##
========================================
  Coverage   93.77%   93.78%            
========================================
  Files        1146     1146            
  Lines       23898    23898            
  Branches     5040     5145   +105     
========================================
+ Hits        22411    22412     +1     
+ Misses       1419     1409    -10     
- Partials       68       77     +9     

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[bradenmacdonald]

FYI @Anas12091101. No action needed.