agent_ui: Remove context strip from inline assistant (#42633)

TODO
- [x] Implement PromptEditor::paste
- [x] Fix creases on unlink
- [x] PromptCompletionProviderDelegate::supports_images
- [ ] Fix highlighting in completion menu

Release Notes:

- N/A

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Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
f0820ae8e4Bennet Bo Fenner committed on 11/21/2025, 5:10:30 PM· committed by GitHubparent5a9b810
28 files changedLine totals unavailable