Fix JSR global types and update size limits

[dahiya001rohit]

This update addresses an issue where global type definitions were missing when consuming the package via JSR.

Key Changes:

Fixed JSR Types (src/globals-jsr.ts): Added explicit declare global type definitions. This ensures that users consuming the package via JSR will receive the correct global types, resolving the TODO in
src/globals.ts

Updated Build Config (tsconfig.json): Modified the exclusion rules to exclude
src/globals-jsr.ts instead of src/globals.ts
. This ensures that globals.d.ts is correctly generated for the standard NPM build while preventing "Duplicate identifier" errors during local development. Adjusted Size Limits (.size-limit.json): Slightly increased the allowed package size limits (Libdefs: 44KB, All: 907KB) to accommodate the additional type definitions and prevent build failures.

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[antongolub]

declare global remains restricted in JSR
https://jsr.io/docs/about-slow-types#global-augmentation