Fixes needed for FusionTensors.jl

[mtfishman]

Here are some fixes I found were required for upgrading FusionTensors.jl (ITensor/FusionTensors.jl#83) to GradedArrays.jl v0.5 (#8).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.54%. Comparing base (3e4c87a) to head (57d921e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #76   +/-   ##
=======================================
  Coverage   93.54%   93.54%           
=======================================
  Files          12       12           
  Lines         914      914           
=======================================
  Hits          855      855           
  Misses         59       59           

Flag	Coverage Δ
docs	0.00% <0.00%> (ø)

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