Posting a draft should be easier to find

### Describe the request Today I wanted to post a draft for the first time. I had trouble to discover how this is done. Right now I have to go to the drafts view and double click the title of a draft. While I discovered this easily, I din't realize at all that this allows to post instead of only to edit. Both views are almost the same, only the button text is different. Hence I thought this is just another way to edit my draft. Probably a minimal solution would be to have an option to post on the edit button. Similar as you do when writing a post and you can select alternative actions in a dropdown. <img width="407" height="260" alt="Image" src="https://github.com/user-attachments/assets/7c7e72b4-f6c5-4de3-b469-5b475a6bf61b" /> Same behaviour everywhere and you're still able to review the draft before posting. ### Checks - [ ] This follows the [GNOME HIG](https://developer.gnome.org/hig/).