fix(design): fix title in Dialog to use passed variable

[jikkai]

• I am sure that the code is update-to-date with the dev branch.

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Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 32.86%. Comparing base (751b491) to head (883734c).
Report is 1 commits behind head on dev.

Files	Patch %	Lines
packages/design/src/components/dialog/Dialog.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1556   +/-   ##
=======================================
  Coverage   32.86%   32.86%           
=======================================
  Files         919      919           
  Lines       51200    51200           
  Branches    10661    10661           
=======================================
  Hits        16825    16825           
  Misses      34375    34375           

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