fix: correct overlay highlighting in code examples

[mrbadri]

Description

This PR fixes the code overlay highlight issue in RTL mode on fa.react.dev and ar.react.dev. Previously, hovering over the code section did not properly highlight the preview area due to incorrect overlay positioning in RTL layouts.

Fix
• Added dir="ltr" to ensure consistent overlay behavior across RTL and LTR layouts.

Before & After Video

📌 Before Fix (Bug in RTL Mode):

Screen.Recording.2025-03-04.at.1.30.14.PM.mov

✅ After Fix (Corrected Overlay in RTL Mode):

Screen.Recording.2025-03-04.at.2.04.33.PM.mov

Related Issue

Closes #7668

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
19-react-dev	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 4, 2025 10:08pm
react-dev	✅ Ready (Inspect)	Visit Preview		Mar 4, 2025 10:08pm

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Size changes

📦 Next.js Bundle Analysis for react-dev

This analysis was generated by the Next.js Bundle Analysis action. 🤖

Five Pages Changed Size

The following pages changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/404	127.14 KB (🟡 +5 B)	237.58 KB
/500	127.15 KB (🟡 +5 B)	237.59 KB
/[[...markdownPath]]	129.02 KB (🟡 +5 B)	239.46 KB
/errors	127.42 KB (🟡 +5 B)	237.86 KB
/errors/[errorCode]	127.4 KB (🟡 +5 B)	237.83 KB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 10% or more, there will be a red status indicator applied, indicating that special attention should be given to this.

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