fix: '_io.BytesIO' object has no attribute 'name' in paginator

[yoggys]

Summary

Fix issue with discord/ext/pages/pagination.py update function while using e.g. io.BytesIO.
Files that cannot be updated are skipped.

Discord forum post

Information

• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed).
• This PR is not a code change (e.g. documentation, README, typehinting,
  examples, ...).

Checklist

• I have searched the open pull requests for duplicates.
• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why.

[CompuGenius-Programs]

@yoggys, Thanks for this!

[Nzii3]

@yoggys Has the updated code been tested to make sure this works? If so, please provide screenshots and code usages so I can test this out myself with my test build.

[Nzii3]

Me and Bob are talking about the update_files() function, and it doesn’t seem to really update the files, since they are updated each time the page is changed.

[CompuGenius-Programs]

@yoggys Has the updated code been tested to make sure this works? If so, please provide screenshots and code usages so I can test this out myself with my test build.

Here's a screenshot of the embed successfully having the proper image, which was sent with io.BytesIO. Without the above fix, the bot throws the error when trying to click to another page.

Here's my code:

with open(file_name, 'rb') as fp:
    data = io.BytesIO(fp.read())
file = discord.File(data, file_name)

[yoggys]

@yoggys Has the updated code been tested to make sure this works? If so, please provide screenshots and code usages so I can test this out myself with my test build.

import logging
import sys
from io import StringIO

import discord
from discord.ext import commands, pages

logging.basicConfig(stream=sys.stdout, level=logging.INFO)

class Bot(commands.Bot):
    def __init__(self):
        super().__init__(command_prefix = '.', intents=discord.Intents.all())

bot = Bot()

@bot.slash_command()
async def teststringio(
    ctx: discord.ApplicationContext, 
): 
    test = discord.Embed(title="test", description="test")
    
    p = []
    for i in range(5):
        p.append(pages.Page(embeds=[test], files=[discord.File(StringIO(f"{i}"), f"test{i}.txt")]))
    paginator = pages.Paginator(pages=p, disable_on_timeout=True)
    await paginator.respond(ctx.interaction)
    
@bot.slash_command()
async def testreadingbuffer(
    ctx: discord.ApplicationContext, 
): 
    test = discord.Embed(title="test", description="test")
    
    p = []
    for i in range(5):
        p.append(pages.Page(embeds=[test], files=[discord.File(f"test{i}.txt")]))
    paginator = pages.Paginator(pages=p, disable_on_timeout=True)
    await paginator.respond(ctx.interaction)
            
bot.run("token")

[BobDotCom]

Please check the suggestion I added. Also, please add a changelog entry.

[yoggys]

whops, wrong section - i moved it to Changed

[Lulalaby]

Well then, lgtm

here we go~