Let length(::SparseVector{Tv,Ti}) return Ti

[dkarrasch]

Fixes JuliaLang/julia#45937.

Should be backported to v1.8.

[codecov-commenter]

Codecov Report

Merging #176 (4fa7ea5) into main (e081db6) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #176      +/-   ##
==========================================
+ Coverage   91.66%   91.67%   +0.01%     
==========================================
  Files          11       11              
  Lines        7102     7103       +1     
==========================================
+ Hits         6510     6512       +2     
+ Misses        592      591       -1     

Impacted Files	Coverage Δ
src/sparsevector.jl	94.17% <100.00%> (+<0.01%)	⬆️
src/linalg.jl	84.50% <0.00%> (+0.08%)	⬆️

📣 Codecov can now indicate which changes are the most critical in Pull Requests. Learn more

[github-actions]

The backport to 1.8 failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-1.8 1.8
# Navigate to the new working tree
cd .worktrees/backport-1.8
# Create a new branch
git switch --create backport-176-to-1.8
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick --mainline 1 c5ddb5b397642dd4624224e4a12553272882a33f
# Push it to GitHub
git push --set-upstream origin backport-176-to-1.8
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-1.8

Then, create a pull request where the base branch is 1.8 and the compare/head branch is backport-176-to-1.8.