Respackopts

Commits in Release 4.14.2+forge:

• fix: update fallback i18n outside of reloads
• perf: defer data location resolution
• fix: allow including config supplier at head
• chore: add additional (arguably unneeded) null checks
• chore: wire up overlay support for tests
• chore: use NullMarked
• docs: mark testpack as supported everywhere
• chore: allow marking PackResources impls as broken
• fix: ignore dir rpos in FileFallbackProvider
• perf: add implementation-specific get/has impls to Scope
• docs: update vitepress and add a new pack
• fix: avoid overlay dir RPO cache collisions via pack tagging