feat: Do not assign all paired items (no-changelog)

[michael-radency]

Summary

return undefined if no paired items could be inferred instead of generation from input

Related Linear tickets, Github issues, and Community forum posts

https://linear.app/n8n/issue/NODE-1598/paireditem-when-we-dont-have-any-matches-return-paireditem-undefined

[codecov]

Codecov Report

Attention: Patch coverage is 36.17021% with 30 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
packages/nodes-base/nodes/MongoDb/MongoDb.node.ts	0.00%	5 Missing ⚠️
...kages/nodes-base/nodes/QuickBase/QuickBase.node.ts	0.00%	3 Missing ⚠️
packages/nodes-base/nodes/Ftp/Ftp.node.ts	0.00%	2 Missing ⚠️
.../nodes/Google/BigQuery/v1/GoogleBigQueryV1.node.ts	0.00%	2 Missing ⚠️
...loudFirestore/GoogleFirebaseCloudFirestore.node.ts	0.00%	2 Missing ⚠️
.../Google/Sheet/v2/actions/sheet/delete.operation.ts	0.00%	2 Missing ⚠️
packages/nodes-base/nodes/Kafka/Kafka.node.ts	0.00%	2 Missing ⚠️
.../nodes/Microsoft/Excel/v1/MicrosoftExcelV1.node.ts	0.00%	2 Missing ⚠️
...odes-base/nodes/Microsoft/Sql/MicrosoftSql.node.ts	0.00%	2 Missing ⚠️
...es/nodes-base/nodes/Airtable/v1/AirtableV1.node.ts	0.00%	1 Missing ⚠️
... and 7 more

📢 Thoughts on this report? Let us know!

[ShireenMissi]

LGTM 🎉

[github-actions]

✅ All Cypress E2E specs passed

[cypress]

n8n    Run #9160

Run Properties:   Passed #9160  •  631e67f226: 🌳 🖥️ browsers:node18.12.0-chrome107 🤖 michael-radency 🗃️ e2e/*

Project	n8n
Branch Review	node-1598-paireditem-matches-update
Run status	Passed #9160
Run duration	04m 26s
Commit	631e67f226: 🌳 🖥️ browsers:node18.12.0-chrome107 🤖 michael-radency 🗃️ e2e/*
Committer	Michael Kret
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	5
Skipped	0
Passing	433
View all changes introduced in this branch ↗︎

[janober]

Got released with n8n@1.79.0