Update Header.php

[iranimij]

check if the welcome field is not null and then we try to scape it

Description (*)

Related Pull Requests

Fixed Issues (if relevant)

1. Fixes When the welcome message is empty we face an error in front-end #38209

Manual testing scenarios (*)

1. ...
2. ...

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

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[TuVanDev]

This issue has been fixed in 2.4.7-beta1.

You can take a look at my comment at #37208 (comment) for more information.

[engcom-Hotel]

According to this comment #38210 (comment), we are closing this PR.

Thanks for the contribution @iranimij.