date: fix -d with relative dates and timezone abbreviations #9545

Job	Run time
L10n/Locale Embedding - Cat Utility	36s
L10n/Installation Test (Make & Cargo) (macos-latest, feat_os_macos)	5m 17s
L10n/Multi-call Binary Install Test (macos-latest, feat_os_macos)	3m 16s
L10n/Fluent Syntax Check	18s
L10n/Multi-call Binary Install Test (ubuntu-latest, feat_os_unix)	3m 14s
L10n/Clap Error Localization Test	57s
L10n/French Integration Test	1m 1s
L10n/Installation Test (Make & Cargo) (ubuntu-latest, feat_os_unix)	5m 41s
L10n/Embedded Locale Regression Test	1m 9s
L10n/Build and Test (windows-latest, feat_os_windows)	6m 8s
L10n/Build and Test (ubuntu-latest, feat_os_unix)	2m 54s
L10n/Build and Test (macos-latest, feat_os_macos)	3m 3s
L10n/Locale Embedding - Multicall Binary	2m 4s
L10n/Locale Embedding - Cargo Install	40s
L10n/Locale Support Verification	6m 10s
L10n/Locale Embedding - Ls Utility	48s
L10n/Locale Embedding Regression Test	3s
	43m 19s

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