fix: Remove RpcEntryNotFound from ClioError

[emreariyurek]

Since rippled has its own error codes, all occurrences have been replaced except for PR2549, and the entry has also been removed entirely from Clio’s error enum. This modification follows the feedback provided in this comment: #2549 (comment)

Pending compatible libxrpl — temporarily on hold

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 82.02%. Comparing base (8b6f65f) to head (8714df2).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/rpc/handlers/VaultInfo.cpp	75.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2661   +/-   ##
========================================
  Coverage    82.02%   82.02%           
========================================
  Files          391      391           
  Lines        14636    14636           
  Branches      8007     8007           
========================================
  Hits         12005    12005           
  Misses        1449     1449           
  Partials      1182     1182           

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[kuznetsss]

Looks good, thanks!
But why don't we have to change any tests? I think it would be good to add some tests (in this PR or create an issue and do it in a separate PR).

[godexsoft]

LGTM