deps: Use @streamr/sdk v103.3.0 (bundled)

[mondoreale]

Summary

This pull request updates dependencies and refactors imports to improve compatibility and code clarity. The most important changes are grouped below.

Changes

Dependency Updates:

• Upgraded @streamr/sdk from version ^103.2.2 to ^103.3.0 in package.json to ensure access to the latest features and fixes.
• Upgraded streamr-client-react from version ^3.3.0 to ^3.4.0 in package.json.

Code Refactoring and Import Improvements:

• Changed the dynamic import in getStreamrClient to explicitly import and return StreamrClient from @streamr/sdk, improving clarity and possibly tree-shaking.
• Updated the import in src/stores/streamDraft.tsx to use import type for type-only imports from @streamr/sdk, clarifying intent and potentially reducing bundle size.

Test Cleanup:

• Removed a Jest mock for @streamr/dht WebRTC connection modules in src/shared/test/components/Nav/nav.test.tsx, simplifying test setup.

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Note

Medium Risk
Dependency upgrade plus Jest transform behavior changes can impact runtime behavior and test execution, especially around Node-vs-browser module resolution for @streamr/* packages.

Overview
Updates @streamr/sdk to ^103.3.0 (and streamr-client-react to ^3.4.0), pulling in a refreshed dependency tree in package-lock.json including new browser/polyfill-related deps.

Adjusts getStreamrClient to import and return StreamrClient as a named export (instead of default) and converts streamDraft.tsx’s @streamr/sdk import to type-only. Updates Jest config to use ts-jest isolatedModules and to transpile additional node_modules packages (@streamr/*, @noble/*) while removing a now-unneeded WebRTC module mock from nav.test.tsx.

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