Update layout.php

[proweb]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌

In 2025, Internet Explorer 7-11 de facto died. Therefore, I believe that we no longer need this meta tag to support older versions of IE. and Microsoft's modern Edge browser doesn't use it.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.22%. Comparing base (01b22cd) to head (a88fb06).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #404   +/-   ##
=========================================
  Coverage     77.22%   77.22%           
  Complexity       29       29           
=========================================
  Files            11       11           
  Lines           180      180           
=========================================
  Hits            139      139           
  Misses           41       41           

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[samdark]

Thank you!