MWPW-157686 [MEP] Cannot spoof an experience that exists in manifest but not in Target

[markpadbe]

When you have a pzn manifest with some Target columns and some non Target columns, it is often placed in the pzn metadata AND in Target. If a column is added to the manifest but Target is not updated, then you see the new experience in the MEP button, but you cannot spoof it with the manifest.

QA instructions: go to the before and after links below and expand the MEP button. "mobile-device" is correctly selected only in the after link

Resolves: MWPW-157686

Test URLs:

• Before: https://main--cc--adobecom.hlx.page/drafts/mepdev/fragments/2024/q4/mepbugpzn/pznnotupdatedintarget?at_preview_token=5AB35DHSLjOM9UmmfvmJmg&at_preview_index=1_1&at_preview_listed_activities_only=true&mep=%2Fdrafts%2Fmepdev%2Ffragments%2F2024%2Fq4%2Fmepbugpzn%2Fpznnotupdatedintarget.json--mobile-device
• After: https://main--cc--adobecom.hlx.page/drafts/mepdev/fragments/2024/q4/mepbugpzn/pznnotupdatedintarget?at_preview_token=5AB35DHSLjOM9UmmfvmJmg&at_preview_index=1_1&at_preview_listed_activities_only=true&milolibs=spoofpznexperience&mep=%2Fdrafts%2Fmepdev%2Ffragments%2F2024%2Fq4%2Fmepbugpzn%2Fpznnotupdatedintarget.json--mobile-device
• Psi-check: https://spoofpznexperience--milo--adobecom.hlx.page/?martech=off

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed.
In case there are problems, just click a checkbox below to rerun the respective action.

• Re-run PSI checks
• Re-sync branch

Commits

• 62531d2 ✅ (latest)
• 734ec78 ✅

[aem-code-sync]

	Page	Scores	Audits	Google
M	/?martech=off
D	/?martech=off

[codecov]

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Additional details and impacted files

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##             mepmorehtmlels    #2844   +/-   ##
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  Coverage                  ?   96.08%           
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  Files                     ?      215           
  Lines                     ?    53944           
  Branches                  ?        0           
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  Hits                      ?    51833           
  Misses                    ?     2111           
  Partials                  ?        0           

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