Offline Mode: Integrate "Media Uploads" with a sync engine for drafts

[kean]

There needed to be a way to somehow inform the user why the sync fails in case of a terminal error with media uploads.

• Integrate PostMediaUploadsView with draft sync engine
• Perform sync retries on terminal error but with longer delay (otherwise there is no retry mechanism)

To test:

• Mock one of the terminal media failures (e.g. change var maxUploadSize: NSNumber?)
• Follow the steps from the video:

https://github.com/wordpress-mobile/WordPress-iOS/assets/1567433/2df7a479-2d62-4f89-a984-eba5b1f4a81e

Regression Notes

1. Potential unintended areas of impact: Post Media
2. What I did to test those areas of impact (or what existing automated tests I relied on): manual
3. What automated tests I added (or what prevented me from doing so): n/a

PR submission checklist:

• [ ] I have completed the Regression Notes.
• [ ] I have considered adding unit tests for my changes.
• [ ] I have considered adding accessibility improvements for my changes.
• [ ] I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

Testing checklist:

• [ ] WordPress.com sites and self-hosted Jetpack sites.
• [ ] Portrait and landscape orientations.
• [ ] Light and dark modes.
• [ ] Fonts: Larger, smaller and bold text.
• [ ] High contrast.
• [ ] VoiceOver.
• [ ] Languages with large words or with letters/accents not frequently used in English.
• [ ] Right-to-left languages. (Even if translation isn’t complete, formatting should still respect the right-to-left layout)
• [ ] iPhone and iPad.
• [ ] Multi-tasking: Split view and Slide over. (iPad)

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack Alpha by scanning the QR code below to install the corresponding build.

	App Name	Jetpack Alpha
	Configuration	Release-Alpha
	Build Number	pr23103-d70876e
	Version	24.8
	Bundle ID	com.jetpack.alpha
	Commit	d70876ea4bc99683bd204baaaf4a4450a98f5b4f
	App Center Build	jetpack-installable-builds #8846

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[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress Alpha by scanning the QR code below to install the corresponding build.

	App Name	WordPress Alpha
	Configuration	Release-Alpha
	Build Number	pr23103-d70876e
	Version	24.8
	Bundle ID	org.wordpress.alpha
	Commit	d70876ea4bc99683bd204baaaf4a4450a98f5b4f
	App Center Build	WPiOS - One-Offs #9800

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[dvdchr]

Hi @kean 👋 , I'm bumping this PR's milestone to 24.9 since I'm starting code freeze. Feel free to re-target this to the release branch if this is a blocker or intended for 24.8.

[kean]

I'm going to move the target back to 24.9 – it's not needed for the current release, and there are some enhancements still needed.

[kean]

It's a bit unexpected for the warning icon to still be there after I take an action to cancel the upload. What do you think of showing a spinner?

I agree, and I think it's not the only scenario where the spinner is missing.

I changes the PostCoordinator code to always show it and to also do nothing if the worker doesn't exist or doesn't have an error:

if let worker = workers[post.objectID], worker.error != nil {