fix: configuration API returns wrong app_id

[MichaelDeSteven]

What this PR does:

Which issue(s) this PR fixes:

Fixes #613

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

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[codecov]

Codecov Report

Merging #629 (7ed12eb) into main (36ed813) will not change coverage.
The diff coverage is 0.00%.

❗ Current head 7ed12eb differs from pull request most recent head 5797639. Consider uploading reports for the commit 5797639 to get more accurate results

@@           Coverage Diff           @@
##             main     #629   +/-   ##
=======================================
  Coverage   60.92%   60.92%           
=======================================
  Files         120      120           
  Lines        6377     6377           
=======================================
  Hits         3885     3885           
  Misses       2120     2120           
  Partials      372      372           

Impacted Files	Coverage Δ
pkg/grpc/default_api/api_configuration.go	78.40% <0.00%> (ø)

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[seeflood]

lgtm

[seeflood]

@MichaelDeSteven Thanks for your contribution!
It fixes the wrong app_id. However, there's another bug in #613 that the store_name is wrong, too 😭
Anyway, we can leave the store_name bug as a TODO thing and fix it in a new PR.
Welcome to the community!