Fix duplicate households on 'Merge same household' exports

[eileenmcnaughton]

Overview

Merge same household was creating duplicate rows for each household, one for the "merged individuals" and one being the explicit household directly exported.

Alternative of #14116

Before

• Duplicate households on "merge same household" contact export.

After

• No duplicate households on "merge same household" contact export.

Technical Details

When exporting contacts with "Merge same household" a household record is created by merging the individual record. However, that household is also exported directly leading to two records for the same household.
If a household has no relationships then we do need to directly export.

Comments

@mattwire I managed to replicate this in a test but your fix didn't make it pass - wanna test this?

From Prev PR:

Reported on two sites running 5.11 and 5.12. I don't think this is a regression as "Merge same household" was completely broken until recently.

[civibot]

(Standard links)

• If this is your first pull-request for CiviCRM, please browse CONTRIBUTING.md for information about the development and testing processes.
• If you are reviewing this pull-request, you may wish to consult the test sites and the Review Standards (long template, short template).

[eileenmcnaughton]

@mattwire wanna check this - it was your bug

[eileenmcnaughton]

test this please

[mattwire]

Thanks @eileenmcnaughton I'll get to this soon!

[mattwire]

Ok I've now tested this and am happy that it fixes the bug on the sites where it's been reported to me.

[eileenmcnaughton]

thanks @mattwire