Do not modify input in-place in to_hetero_with_bases

[rusty1s]

No description provided.

[codecov]

Codecov Report

Merging #7363 (5b97546) into master (5959fed) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 5b97546 differs from pull request most recent head d1a23e0. Consider uploading reports for the commit d1a23e0 to get more accurate results

@@            Coverage Diff             @@
##           master    #7363      +/-   ##
==========================================
- Coverage   91.52%   91.52%   -0.01%     
==========================================
  Files         438      438              
  Lines       24364    24362       -2     
==========================================
- Hits        22299    22297       -2     
  Misses       2065     2065              

Impacted Files	Coverage Δ
...h_geometric/nn/to_hetero_with_bases_transformer.py	95.28% <100.00%> (-0.05%)	⬇️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more