Add bias to TAGConv

[rusty1s]

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[codecov]

Codecov Report

Merging #4597 (9962946) into master (5ed4b38) will decrease coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4597      +/-   ##
==========================================
- Coverage   82.90%   82.79%   -0.12%     
==========================================
  Files         315      315              
  Lines       16590    16594       +4     
==========================================
- Hits        13754    13739      -15     
- Misses       2836     2855      +19     

Impacted Files	Coverage Δ
torch_geometric/nn/conv/tag_conv.py	100.00% <100.00%> (ø)
torch_geometric/nn/conv/utils/typing.py	81.25% <0.00%> (-17.50%)	⬇️
torch_geometric/io/tu.py	93.58% <0.00%> (-2.57%)	⬇️
torch_geometric/nn/models/mlp.py	98.41% <0.00%> (-1.59%)	⬇️
torch_geometric/transforms/gdc.py	78.17% <0.00%> (-1.02%)	⬇️
torch_geometric/data/dataset.py	96.80% <0.00%> (-0.80%)	⬇️
torch_geometric/nn/conv/rgat_conv.py	83.76% <0.00%> (-0.53%)	⬇️
torch_geometric/graphgym/utils/comp_budget.py	15.51% <0.00%> (+0.51%)	⬆️

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