refactor(editor): adapt upload code to changes on server, get parent host for usage in iframe

[elbotho]

don't merge before https://github.com/serlo/serlo-editor-as-lti-tool/pull/160/files is merged and deployed

[vercel]

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Name	Status	Preview	Updated (UTC)
frontend	✅ Ready (Inspect)	Visit Preview	Nov 8, 2024 1:27pm

[github-actions]

📦 Next.js Bundle Analysis for @serlo/frontend

This analysis was generated by the Next.js Bundle Analysis action. 🤖

🎉 Global Bundle Size Decreased

Page	Size (compressed)
global	104.42 KB (-3 B)

Details

The global bundle is the javascript bundle that loads alongside every page. It is in its own category because its impact is much higher - an increase to its size means that every page on your website loads slower, and a decrease means every page loads faster.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

If you want further insight into what is behind the changes, give @next/bundle-analyzer a try!

Twenty-two Pages Changed Size

The following pages changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/[...slug]	87.17 KB (-1 B)	191.59 KB
/___bot_or_not	101.91 KB (-1 B)	206.33 KB
/___editor_preview	530.47 KB (🟡 +79 B)	634.88 KB
/biologie	155.77 KB (-1 B)	260.18 KB
/chemie	155.77 KB (-1 B)	260.18 KB
/content-only/[...slug]	79.22 KB (-1 B)	183.63 KB
/discussions	99.88 KB (-1 B)	204.29 KB
/editor	79.98 KB (-1 B)	184.4 KB
/entity/create/[type]/[taxonomyId]	550.56 KB (🟡 +79 B)	654.98 KB
/entity/repository/add-revision/[...id]	550.29 KB (🟡 +79 B)	654.71 KB
/entity/repository/compare/[entity_id]/[revision_id]	91.91 KB (-1 B)	196.33 KB
/informatik	155.77 KB (-1 B)	260.19 KB
/lerntipps	155.77 KB (-1 B)	260.18 KB
/license/detail/[id]	67.12 KB (-1 B)	171.54 KB
/mathe	155.77 KB (-1 B)	260.18 KB
/nachhaltigkeit	155.77 KB (-1 B)	260.19 KB
/page/create	550.28 KB (🟡 +79 B)	654.7 KB
/privacy	44.85 KB (-2 B)	149.26 KB
/taxonomy/term/create/[parent_id]/[id]	550.04 KB (🟡 +79 B)	654.45 KB
/taxonomy/term/update/[id]	549.98 KB (🟡 +79 B)	654.4 KB
/user/profile/[username]	178.73 KB (-1 B)	283.15 KB
/user/settings	551.96 KB (🟡 +79 B)	656.37 KB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 20% or more, there will be a red status indicator applied, indicating that special attention should be given to this.