Configure vortexor-receiver crate to publish

[mircea-c]

Problem

Publishing solana-core crate fails because the solana-vortexor-receiver crate is configured to not publish

error: no matching package named `solana-vortexor-receiver` found
location searched: `kellnr` index
required by package `solana-core v2.3.0 (/solana/core)`
couldn't publish 'solana-core'

Summary of Changes

Configure solana-vortexor-receiver to publish

Required to fix CI for #6332

[mircea-c]

CI is pending on approval from anza-team to take ownership of the crate name on crates.io

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.8%. Comparing base (bfebc57) to head (5e557ba).
⚠️ Report is 3221 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #6449     +/-   ##
=========================================
- Coverage    82.8%    82.8%   -0.1%     
=========================================
  Files         847      847             
  Lines      379486   379486             
=========================================
- Hits       314509   314494     -15     
- Misses      64977    64992     +15     

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[steviez]

Pending some discussion in Discord

[steviez]

We ended up pushing #6525 which replaces the need for this PR