fix (backend-services) fix errors for XRPL exception

[sonasi]

Some successful transactions aren't found right away so it throws an error. This differentiates from other HTTPExceptoins.

[netlify[bot]]

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🔨 Latest commit	af9e23de647da7bb1c5cc167d1125a03469cc49b
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[codecov-commenter]

Codecov Report

Merging #542 (af9e23d) into main (b255260) will decrease coverage by 0.89%. The diff coverage is n/a.

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@@            Coverage Diff             @@
##             main     #542      +/-   ##
==========================================
- Coverage   47.16%   46.28%   -0.89%     
==========================================
  Files         172      172              
  Lines        2718     2718              
  Branches      529      529              
==========================================
- Hits         1282     1258      -24     
- Misses       1436     1460      +24     

Impacted Files	Coverage Δ
web-client/src/app/state/setup/setup.service.ts	30.55% <0.00%> (-61.12%)	:arrow_down:
web-client/src/app/app.component.ts	75.00% <0.00%> (-16.67%)	:arrow_down:

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