Fix heterogeneous temporal sampling

[rusty1s]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 77.77778% with 4 lines in your changes missing coverage. Please review.

Project coverage is 78.63%. Comparing base (5126f73) to head (c3b6984).
Report is 187 commits behind head on master.

Files with missing lines	Patch %	Lines
pyg_lib/csrc/sampler/cpu/neighbor_kernel.cpp	77.77%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #102      +/-   ##
==========================================
- Coverage   78.67%   78.63%   -0.04%     
==========================================
  Files          16       16              
  Lines         408      426      +18     
==========================================
+ Hits          321      335      +14     
- Misses         87       91       +4     

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