Fixes display of long site title on mobile

[techfg]

Description

• Closes site title/logo extends beyond menu toggle and search button not visible on mobile view #2715
• What does this PR change? Ensure that when site title logo/text extends beyond viewport, the search icon is visible and the mobile menu toggle does not overlay the site title text/logo.
• Did you change something visual? A before/after screenshot can be helpful.

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🦋 Changeset detected

Latest commit: f7e0d6a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@astrojs/starlight	Patch

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[delucis]

Thanks for your patience waiting for a review @techfg! At first, I wasn’t able to reproduce the issue, but I did see it in Edge, so it seems to be browser specific and this change does look like it fixes things. Thanks again 🙌

[techfg]

Thanks for reviewing @delucis! Strange, I was able to reproduce in edge/chrome/firefox running on Windows but glad to hear that you were able to repro and confirm!

[delucis]

Yeah may also depend on OS? On macOS, Firefox and Safari were behaving as expected for me, but Edge wasn’t. The web is fun! 😁