fix: validate region parameter before URL interpolation to prevent SSRF#5819

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lucasjia-aws wants to merge 3 commits intoaws:masterfrom

lucasjia-aws:fix/validate-region-ssrf-prevention

Commits on May 4, 2026

fix: validate region parameter before URL interpolation to prevent SSRF
lucasjia-aws
committed

Commits on May 5, 2026

test: add region validation tests and fix test region values
lucasjia-aws
committed
fix: consolidate region validation into centralized entry points
lucasjia-aws
committed