[MISC] Early set of read-only-endpoints

[dragomirp]

Issue

Setting read-only-uri before username generation will trigger a database created event in the client before the database is actually created

Solution

Only set the uri if credentials are set

Checklist

• I have added or updated any relevant documentation.
• I have cleaned any remaining cloud resources from my accounts.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.27%. Comparing base (655b251) to head (db8529b).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/relations/postgresql_provider.py	0.00%	2 Missing ⚠️

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (33.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1072      +/-   ##
==========================================
- Coverage   73.29%   73.27%   -0.02%     
==========================================
  Files          15       15              
  Lines        3921     3922       +1     
  Branches      574      575       +1     
==========================================
  Hits         2874     2874              
- Misses        833      834       +1     
  Partials      214      214              

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[taurus-forever]

Can PG14 have a chance to have username without password and vice versa?