fix: correctly unpack startup tasks in AutoShardedClient

[mifuyutsuki]

Pull Request Type

• Feature addition
• Bugfix
• Documentation update
• Code refactor
• Tests improvement
• CI/CD pipeline enhancement
• Other: [Replace with a description]

Description

Fixes AutoShardedClient bug which causes the client to dispatch an error involving "unhashable type: dict" while loading extensions. This error causes the client to not run extensions' defined async_start() methods.

Changes

• Change how async_startup_tasks is unpacked in AutoShardedClient to follow the method used by Client

Related Issues

Fixes #1687

Test Scenarios

Create and run a bot with AutoShardedClient and extension(s). The code below uses jurigged extension (requires jurigged). In this specific scenario, while the bot is running, try calling the main command before and after editing the contents of ctx.send().

from interactions import AutoShardedClient, Intents, slash_command
bot = AutoShardedClient(intents=Intents.DEFAULT)

@slash_command(name="main", description="Main command")
async def main_cmd(ctx):
  await ctx.send("Sent from main")

bot.load_extension("interactions.ext.jurigged")
bot.start("token")

Python Compatibility

• I've ensured my code works on Python 3.10.x
• I've ensured my code works on Python 3.11.x

Checklist

• I've run the pre-commit code linter over all edited files
• I've tested my changes on supported Python versions
• I've added tests for my code, if applicable
• I've updated / added documentation, where applicable

[silasary]

Looks good to me

[AstreaTSS]

Suggesting it's a copy of behavior from Client, it seems good to me.