fix: fix lr scheduling

[XuehaiPan]

Description

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Motivation and Context

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You can use the syntax close #15213 if this solves the issue #15213

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds core functionality)
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• Example (update in the folder of example)

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[codecov-commenter]

Codecov Report

Merging #76 (9cf678e) into main (d1b1898) will increase coverage by 1.39%.
The diff coverage is 79.16%.

❗ Current head 9cf678e differs from pull request most recent head b12d7de. Consider uploading reports for the commit b12d7de to get more accurate results

@@            Coverage Diff             @@
##             main      #76      +/-   ##
==========================================
+ Coverage   68.77%   70.16%   +1.39%     
==========================================
  Files          31       31              
  Lines        1393     1391       -2     
==========================================
+ Hits          958      976      +18     
+ Misses        435      415      -20     

Flag	Coverage Δ
unittests	70.16% <79.16%> (+1.39%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
torchopt/_src/linalg.py	91.54% <0.00%> (ø)
torchopt/_src/utils.py	12.64% <0.00%> (ø)
torchopt/_src/implicit_diff.py	91.87% <66.66%> (ø)
torchopt/_src/alias.py	76.78% <100.00%> (+3.97%)	⬆️
torchopt/_src/schedule.py	80.00% <100.00%> (-0.96%)	⬇️
torchopt/_src/transform.py	80.69% <100.00%> (+4.82%)	⬆️

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