[frontend] fix Fintel templates pdf export button (#8336)

[Archidoit]

Proposed changes

In content tab of a container, when we want to export an html fintel template in pdf, the ‘generate a pdf export’ redirects to the general export pop-up instead of the pre-built one (with 'html to pdf' connector by default)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.31%. Comparing base (dbda0cf) to head (a7cbf86).
Report is 4 commits behind head on release/6.5.0.

Additional details and impacted files

@@                Coverage Diff                @@
##           release/6.5.0    #9729      +/-   ##
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+ Coverage          64.29%   64.31%   +0.01%     
=================================================
  Files                653      653              
  Lines              62460    62460              
  Branches            6921     6929       +8     
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+ Hits               40159    40171      +12     
+ Misses             22301    22289      -12     

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