Fix model initialization in ModuleStateUpdate

[zhiqwang]

Add missing strides and anchor_grids initialization in ModuleStateUpdate.

[codecov]

Codecov Report

Merging #201 (268befb) into main (42021e2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #201   +/-   ##
=======================================
  Coverage   96.83%   96.83%           
=======================================
  Files          10       10           
  Lines         601      601           
=======================================
  Hits          582      582           
  Misses         19       19           

Flag	Coverage Δ
unittests	96.83% <ø> (ø)

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