shred: two refactorings #15195

Job	Run time
L10n/Fluent Syntax Check	22s
L10n/Installation Test (Make & Cargo) (ubuntu-latest, feat_os_unix)	7m 52s
L10n/French Integration Test	1m 39s
L10n/Locale Support Verification	8m 57s
L10n/Clap Error Localization Test	1m 54s
L10n/Build and Test (windows-latest, feat_os_windows)	6m 16s
L10n/Build and Test (ubuntu-latest, feat_os_unix)	6m 29s
L10n/Multi-call Binary Install Test (ubuntu-latest, feat_os_unix)	4m 44s
L10n/Multi-call Binary Install Test (macos-latest, feat_os_unix)	6m 57s
L10n/Locale Embedding - Ls Utility	1m 16s
L10n/Locale Embedding - Cat Utility	54s
L10n/Build and Test (macos-latest, feat_os_unix)	5m 28s
L10n/Locale Embedding - Cargo Install	57s
L10n/Embedded Locale Regression Test	1m 59s
L10n/Installation Test (Make & Cargo) (macos-latest, feat_os_unix)	12m 22s
L10n/Locale Embedding - Multicall Binary	2m 59s
	1h 11m 5s

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