DM-50124: Add rename to dict to ImportIR

[taranu]

Checklist

• ran Jenkins
• ran and inspected package-docs build
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

❌ Patch coverage is 34.78261% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.75%. Comparing base (185ea4b) to head (ffcfee8).
⚠️ Report is 57 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
python/lsst/pipe/base/pipelineIR.py	34.78%	12 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #508      +/-   ##
==========================================
- Coverage   83.83%   83.75%   -0.08%     
==========================================
  Files         114      114              
  Lines       14736    14757      +21     
  Branches     1906     1912       +6     
==========================================
+ Hits        12354    12360       +6     
- Misses       1929     1941      +12     
- Partials      453      456       +3     

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[TallJimbo]

I think you could clean up the logic later by defining this as

rename: dict[str, str] = dataclasses.field(default_factory=dict)

since in this case (unlike include and exclude) None behaves like an empty dict.

[taranu]

I'm moving this to DM-52168.