#3591689: Too many redirects in invalid langcode as path-prefix

Narendra Singh Rathorerequested to merge
issue/canvas-3591689:3591689-too-many-redirects-in-invalid-langcode-as-path-prefix into 1.x

[Description of changes]

Testing instructions

  • Add additional language at admin/config/regional/language/add
  • Change path prefix to something random (frtest) at /admin/config/regional/language/detection/url
  • Visit /frtest/canvas to observe to get error ERR_TOO_MANY_REDIRECTS
  • Switch to this MR to see that now the issue is fixed.

Closes #3591689

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