Address all errors reported by IntelliJ #3815

Job	Run time
Version Sync	13s
Version Sync	13s
Version Sync	13s
Nix flake (self-hosted, linux, normal)	5m 44s
Nix flake (self-hosted, linux, normal)	5m 44s
Nix flake (self-hosted, linux, normal)	5m 44s
Nix flake (macos-13, macos-13)	15m 44s
Nix flake (macos-13, macos-13)	15m 44s
Nix flake (macos-13, macos-13)	15m 44s
Nix flake (MacM1, self-macos-12)	5m 56s
Nix flake (MacM1, self-macos-12)	12s
Nix flake (MacM1, self-macos-12)	21m 52s
Check code formatting	1m 22s
Check code formatting	1m 22s
Check code formatting	1m 22s
K Ubuntu Jammy Package	25m 5s
K Ubuntu Jammy Package	25m 5s
K Ubuntu Jammy Package	25m 5s
K Tests	26m 45s
K Tests	26m 45s
K Tests	26m 45s
Performance Tests	11m 2s
Performance Tests	11m 2s
Performance Tests	11m 2s
	4h 45m 45s

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