LightningLinkData: Support edge_label_time

[wsad1]

LightningLinkData passes the edge_label_time to LinkNeighborLoader.
Needs #5137 to be merged.

[codecov]

Codecov Report

Merging #5173 (58773cd) into master (5ad9f3c) will decrease coverage by 0.04%.
The diff coverage is 32.14%.

❗ Current head 58773cd differs from pull request most recent head e70abee. Consider uploading reports for the commit e70abee to get more accurate results

@@            Coverage Diff             @@
##           master    #5173      +/-   ##
==========================================
- Coverage   83.04%   82.99%   -0.05%     
==========================================
  Files         333      333              
  Lines       18403    18415      +12     
==========================================
+ Hits        15282    15283       +1     
- Misses       3121     3132      +11     

Impacted Files	Coverage Δ
torch_geometric/data/lightning_datamodule.py	31.97% <20.83%> (-1.78%)	⬇️
torch_geometric/loader/link_neighbor_loader.py	93.08% <100.00%> (ø)

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