feat: support getname for symbolic complex numbers

[AayushSabharwal]

No description provided.

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.

Project coverage is 79.21%. Comparing base (2784b7e) to head (06957b4).
Report is 11 commits behind head on master.

Files with missing lines	Patch %	Lines
src/complex.jl	81.81%	2 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1368       +/-   ##
===========================================
+ Coverage    3.98%   79.21%   +75.23%     
===========================================
  Files          51       51               
  Lines        4793     4913      +120     
===========================================
+ Hits          191     3892     +3701     
+ Misses       4602     1021     -3581     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[ChrisRackauckas]

Missing hasname

[AayushSabharwal]

hasname is in https://github.com/JuliaSymbolics/Symbolics.jl/pull/1368/files#diff-d0de37135c3ec6d5d3c526cbcd6e7200c8e29001ce6d8028416190b7ceb05875R85-R89

[ChrisRackauckas]

But the test fails because it's missing for Complex{Num}

[ChrisRackauckas]

real test failure.