Reproduce reaction streaming issue

[nplasterer]

Part of #655

[changeset-bot]

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[macroscopeapp]

Add streaming test for messages and reactions to reproduce reaction streaming issue

The changes introduce a new test case in contentTypeTests.ts that verifies message and reaction streaming functionality across group and direct message conversations. The test creates two users, sets up message streaming, sends messages and reactions (both V1 and V2 formats), and validates callback behavior. Additionally, updates iOS dependencies in Podfile.lock including MMKV/MMKVCore upgrades to version 2.2.1 and various Expo package updates.

📍Where to Start

Start with the new test case can stream conversations and messages including reactions in contentTypeTests.ts which demonstrates the streaming functionality being tested.

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