Setting metadata value with a secret/variable fails in the end_user_authentication section

[allenhouchins]

Fleet version: 4.63
Web browser and operating system: Any

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💥  Actual behavior

I am trying to set a value for metadata via gitops for end_user_authentication using a github secret (ex: $DOGFOOD_SSO_METADATA). This results in the error:Error: failed to unmarshal file error converting YAML to JSON: yaml: line 42: could not find expected ':':

This same secret works without issue under the sso_settings option. I am also able to get the end_user_authentication section to work if I paste the contents of that variable as the value (as a string). This issue seems limited to some validation we are doing specifically in the end_user_authentication section. Setting the values through the UI gives me expected results.

🧑‍💻  Steps to reproduce

1. Grab the XML Single sign-on metadata out of dogfood
2. Set it as a variable and pass it to the metadata field under end_user_authentication
3. Observe error

🕯️ More info (optional)

See this pull request for the error: #26042

[sharon-fdm]

Hey team! Please add your planning poker estimate with Zenhub @dantecatalfamo @jacobshandling @lucasmrod @sgress454

[sgress454]

I wouldn't be surprised if this was due to the contents of the variable, rather than an issue with using a variable for this config.

[sgress454]

@allenhouchins can you DM and let me know how you're setting the env var when testing #26042?