Correctly return the number of Repositories for Organizations

[zeripath]

Calculate and return the number of Repositories on the dashboard
Organization list.

This PR restores some of the logic that was removed in #14032 to
calculate the number of repos on the dashboard orgs list.

Fix #16648
Replaces #16799

Signed-off-by: Andrew Thornton [email protected]

[codecov-commenter]

Codecov Report

Merging #16807 (181c391) into main (1cd4a3b) will decrease coverage by 0.00%.
The diff coverage is 88.37%.

@@            Coverage Diff             @@
##             main   #16807      +/-   ##
==========================================
- Coverage   45.50%   45.49%   -0.01%     
==========================================
  Files         762      762              
  Lines       85940    86005      +65     
==========================================
+ Hits        39108    39132      +24     
- Misses      40521    40557      +36     
- Partials     6311     6316       +5     

Impacted Files	Coverage Δ
routers/web/repo/setting.go	14.41% <0.00%> (-0.02%)	⬇️
models/org.go	74.29% <90.24%> (+0.79%)	⬆️
routers/web/user/home.go	58.67% <100.00%> (ø)
modules/git/repo.go	43.31% <0.00%> (-4.40%)	⬇️
services/archiver/archiver.go	54.47% <0.00%> (-4.40%)	⬇️
models/repo_list.go	77.64% <0.00%> (-0.79%)	⬇️
services/pull/pull.go	41.78% <0.00%> (-0.41%)	⬇️
cmd/embedded_stub.go	0.00% <0.00%> (ø)
modules/public/dynamic.go	100.00% <0.00%> (ø)
modules/options/dynamic.go	56.86% <0.00%> (ø)
... and 30 more

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