fix(analytics-core): diagnostics supports multiple script urls

[Mercy811]

Summary

Support multiple script URLs in SDK loader metadata

• registerSdkLoaderMetadata() now accumulates script URLs instead of overwriting. Stored value is an array of normalized URLs; repeated or duplicate-normalized URLs are not added twice.

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Note

Low Risk
Small, localized change to diagnostics URL bookkeeping and matching logic with added test coverage; low blast radius outside error-reporting behavior.

Overview
Updates SDK loader diagnostics metadata to accumulate multiple normalized scriptUrls under GLOBAL_KEY (now stored as an array), deduping repeats and preserving backwards compatibility with the legacy single-string value.

Adjusts uncaught error origin detection to match against any registered script URL (iterating the list) and expands tests to cover array storage, merging/deduping behavior, and matching errors against additional registered URLs.

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[Mercy811]

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[daniel-graham-amplitude]

Lgtm!