Learn more links under "PHP runtime" controls

[fredrikekelund]

Related issues

• Fixes RSM-4475

How AI was used in this PR

I asked Claude to do the implementation mostly because I didn't know by heart where the site controls live.

Proposed Changes

Add "Learn more" links to the create site and edit site modals:

Add site modal	Edit site modal

Testing Instructions

1. npm start
2. Add a new site
3. Open the advanced settings control
4. Ensure that the "Learn more" link under "PHP runtime" leads to the correct documentation page (privately published for now)
5. Open the "Site settings" tab for an existing site
6. Click the "Edit site" button
7. Ensure that the "Learn more" link under "PHP runtime" leads to the correct documentation page (privately published for now)

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[wpmobilebot]

📊 Performance Test Results

Comparing 7741298 vs trunk

app-size

Metric	trunk	7741298	Diff	Change
App Size (Mac)	2341.17 MB	2341.17 MB	+0.00 MB	⚪ 0.0%

site-editor

Metric	trunk	7741298	Diff	Change
load	794 ms	1035 ms	+241 ms	🔴 30.4%

site-startup

Metric	trunk	7741298	Diff	Change
siteCreation	6499 ms	6524 ms	+25 ms	⚪ 0.0%
siteStartup	6983 ms	6490 ms	493 ms	🟢 -7.1%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change (<50ms diff)

[wojtekn]

Let's use createInterpolateElement to avoid interpolating translatable texts.

[fredrikekelund]

We aren't interpolating anything into the __() call here. I see we're using createInterpolateElement elsewhere in this file, but the practical implications of both approaches seem identical to me (apart from <lean_more_link /> being included in the translatable string with createInterpolateElement).

[wojtekn]

My bad, I meant concatenating. See PCYsg-3hI-p2

but the practical implications of both approaches seem identical to me

Not really - if we interpolate instead concatenate, translator could reorder elements if particular language requires that, could add text after "Learn more", wrap it with some characters etc.

[fredrikekelund]

That's actually a good point 👍 I pushed a fix

[wojtekn]

Thanks! 🙌