Added support for ZDOTDIR handling in Zsh shell initialization. #7346

Job	Run time
build-devbox (ubuntu-latest)	22s
golangci-lint (ubuntu-latest)	3m 14s
build-devbox (macos-13)	55s
Test Flake Build	2m 55s
Spell Check with Typos	8s
golangci-lint (macos-13)	7m 16s
auto-nix-install (ubuntu-latest, false)	1m 41s
test (not-main, ubuntu-latest, project-tests-off, 2.12.0)	12m 6s
auto-nix-install (macos-13, false)	6m 0s
auto-nix-install (ubuntu-latest, true)	1m 41s
test (not-main, ubuntu-latest, project-tests-only, 2.30.2)	11m 32s
test (not-main, ubuntu-latest, project-tests-only, 2.19.2)	16m 37s
test (not-main, ubuntu-latest, project-tests-off, 2.30.2)	12m 30s
auto-nix-install (macos-13, true)	7m 8s
test (not-main, ubuntu-latest, project-tests-off, 2.19.2)	9m 4s
test (not-main, ubuntu-latest, project-tests-only, 2.12.0)	12m 58s
test-nix-versions (ubuntu-latest, 2.16.1)	2m 12s
test-nix-versions (ubuntu-latest, 2.19.2)	1m 42s
test-nix-versions (macos-13, 2.16.1)	6m 41s
test-nix-versions (ubuntu-latest, 2.17.0)	1m 50s
test-nix-versions (macos-13, 2.15.1)	5m 3s
test-nix-versions (ubuntu-latest, 2.15.1)	2m 21s
test-nix-versions (ubuntu-latest, 2.18.0)	1m 52s
test-nix-versions (macos-13, 2.19.2)	6m 38s
test-nix-versions (macos-13, 2.24.7)	4m 9s
test-nix-versions (macos-13, 2.17.0)	7m 18s
test-nix-versions (macos-13, 2.18.0)	4m 57s
test-nix-versions (ubuntu-latest, 2.24.7)	1m 31s
	2h 32m 21s

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