get_response(<brms>) fails with a truncated response

[strengejacke]

Fixes #779

[codecov-commenter]

Codecov Report

Merging #781 (6fe3ef1) into main (1607f53) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 6fe3ef1 differs from pull request most recent head 813e8a8. Consider uploading reports for the commit 813e8a8 to get more accurate results

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@@           Coverage Diff           @@
##             main     #781   +/-   ##
=======================================
  Coverage   53.74%   53.74%           
=======================================
  Files         124      124           
  Lines       15223    15225    +2     
=======================================
+ Hits         8181     8183    +2     
  Misses       7042     7042           

Impacted Files	Coverage Δ
R/find_response.R	36.98% <100.00%> (+1.77%)	⬆️