Fix various incorrect coroutine usage

[SessionHero01]

Issues:

1. No error handling inside launch block from supervisorScope
2. Some error handling else where misses CancellationException handling
3. Removes unneeded supervisorScope

[Copilot]

Pull request overview

This pull request fixes incorrect coroutine usage across multiple polling and configuration components by properly handling CancellationException and removing unnecessary coroutine scopes. The changes ensure that coroutine cancellation is propagated correctly, which is critical for proper cleanup and resource management in Kotlin coroutines.

Changes:

• Added CancellationException re-throw logic in exception handlers to ensure proper coroutine cancellation propagation
• Refactored OpenGroupPollerManager.pollAllOpenGroupsOnce() to use async/awaitAll instead of launch/joinAll for cleaner error propagation
• Removed unnecessary supervisorScope wrapper from MessageSender.sendToSnodeDestination() since it doesn't launch child coroutines

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
ConfigUploader.kt	Added CancellationException checks in two catch blocks to properly propagate coroutine cancellation
Poller.kt	Added CancellationException check in TTL extension error handler to prevent swallowing cancellation
OpenGroupPollerManager.kt	Refactored polling logic to use async/awaitAll pattern and removed manual error handling in favor of exception propagation
OpenGroupPoller.kt	Wrapped polling operations in try-catch blocks with CancellationException checks to ensure proper error handling while preserving cancellation
MessageSender.kt	Removed unnecessary supervisorScope wrapper since the function doesn't launch child coroutines

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

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