Fix Xcode 26 Warnings

[jkmassel]

Description

Fixes a bunch of different warnings that surfaced in Xcode 26.

Testing instructions

If CI passes, we're good to go.

[dangermattic]

	1 Warning
⚠️	PR is not assigned to a milestone.

Generated by 🚫 Danger

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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	App Name	Jetpack
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	Build Number	29042
	Version	PR #24856
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[crazytonyli]

@kean would know more about the details. But I think the intention is reusing this WKProcessPool instance to speed up rendering. So, I don't think we should remove this line?

[jkmassel]

WKProcessPool is deprecated now – Apple says it doesn't actually do anything

[kean]

It does say "has no effect", so it should be OK to remove. I hope it doesn't negatively affect the performance, but I don't think we've seen any issues in Comments. They do load asynchronously, but it doesn't negatively affect the user experience in a sigifincant way.

[kean]

Thanks for addressing these! I dream of the day when there are no warnings.