Prevent deletion of expanded routes individually

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #155 will not alter performance

_{Comparing 154-prevent-deletion-of-non-expanded-routes-via-expanded-route (9749b91) with main (32fb24c)}

Summary

✅ 16 untouched benchmarks

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 93.75000% with 4 lines in your changes missing coverage. Please review.

:white_check_mark: All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/node/delete.rs	91.66%	3 Missing :warning:
src/router.rs	50.00%	0 Missing and 1 partial :warning:

Files with missing lines	Coverage Δ
src/errors/delete.rs	86.66% <100.00%> (+10.19%)	:arrow_up:
src/router.rs	86.28% <50.00%> (+1.71%)	:arrow_up:
src/node/delete.rs	80.00% <91.66%> (+2.22%)	:arrow_up: