fix: Wr/coft mpd

[WillieRuemmele]

What does this PR do?

allows CustomFieldTranslation MDT to be retrieved across MPDs

What issues does this PR fix or reference?

forcedotcom/cli#2124 @W-13193003@

Functionality Before

with a remote change to a CFT, the parent COT being in the non-default package dir, and running a force source pull

 ➜  pull
Preparing retrieve request... ⣾
Preparing retrieve request... MetadataTransferError
Error (1): Metadata API request failed: Unexpected child metadata [/Users/william.ruemmele/projects/scratches/sfdx-translation-bug/package-a-app/main/default/objectTranslations/customObject__c-es/customField__c.fieldTranslation-meta.xml] found for parent type [CustomObjectTranslation]

Functionality After

 ➜  sf force source pull                                
Warning: We plan to deprecate this command in the future. Try using the "project retrieve start" command instead.
Loading source tracking information... ⣽
Updating source tracking... done
=== Retrieved Source

 STATE   FULL NAME                         TYPE                    PROJECT PATH                                                                                                   
 ─────── ───────────────────────────────── ─────────────────────── ────────────────────────────────────────────────────────────────────────────────────────────────────────────── 
 Changed customObject__c-es.customField__c CustomFieldTranslation  package-a-app/main/default/objectTranslations/customObject__c-es/customField__c.fieldTranslation-meta.xml      
 Changed customObject__c-es                CustomObjectTranslation package-b-app/main/default/objectTranslations/customObject__c-es/customObject__c-es.objectTranslation-meta.xml 

notice package-a and package-b as the two different packages written to, a is default, where new MD is written to, and b contains the parent COT

[mshanemc]

seems fine. Lots of discussions about how deletes are supposed to be handled, and the possibility of the behavior being confusing to users.

[mshanemc]

QA:
deployed using customer's repro repo, this branch yarn-linked in PDR's bin/dev.

✅ deploys using tracking
✅ deploys using multiple -d

create a field translation
✅ project retrieve preview shows COT is changed

Will Retrieve [1] files.
 Type                    Fullname           Path                                                                                                           
 ─────────────────────── ────────────────── ────────────────────────────────────────────────────────────────────────────────────────────────────────────── 
 CustomObjectTranslation customObject__c-es package-b-app/main/default/objectTranslations/customObject__c-es/customObject__c-es.objectTranslation-meta.xml

✅ project retrieve start shows COT and COFT as changed, but also shows duplicate results. 😕

Retrieved Source
===================================================================================================================================================================
| State   Name               Type                    Path                                                                                                           
| ─────── ────────────────── ─────────────────────── ────────────────────────────────────────────────────────────────────────────────────────────────────────────── 
| Changed customObject__c-es CustomObjectTranslation package-a-app/main/default/objectTranslations/customObject__c-es/customField__c.fieldTranslation-meta.xml      
| Changed customObject__c-es CustomObjectTranslation package-a-app/main/default/objectTranslations/customObject__c-es/customField__c.fieldTranslation-meta.xml      
| Changed customObject__c-es CustomObjectTranslation package-a-app/main/default/objectTranslations/customObject__c-es/customObject__c-es.objectTranslation-meta.xml 
| Changed customObject__c-es CustomObjectTranslation package-a-app/main/default/objectTranslations/customObject__c-es/customObject__c-es.objectTranslation-meta.xml

❌ the COT is in package-b in the customer's repo. It's being added, in duplicate, to package-a when the changes are retrieved. It should have realized that we already had the COT in package-b and any changes are merged into there.

change the translation in the org
❌ tracking thinks there are conflicts with the object in package-b. Also, still duplicated

➜  sfdx-translation-bug git:(main) ✗ ../../plugin-deploy-retrieve/bin/dev project:retrieve:preview

Conflicts [2]. Run the command with the --ignore-conflicts flag to override.
Type                    Fullname           Path                                                                                                           
─────────────────────── ────────────────── ────────────────────────────────────────────────────────────────────────────────────────────────────────────── 
CustomObjectTranslation customObject__c-es package-b-app/main/default/objectTranslations/customObject__c-es/customObject__c-es.objectTranslation-meta.xml 
CustomObjectTranslation customObject__c-es package-b-app/main/default/objectTranslations/customObject__c-es/customObject__c-es.objectTranslation-meta.xml