[CDS-105745] Added note related to undefined variables in expressions…

[vishal-av]

… in NG pipeline

In Harness NG pipelines, undefined variables in expressions will cause a pipeline execution error. Unlike FirstGen pipelines, where undefined variables default to null, NG requires explicit handling of undefined variables.

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[bot-gitexp-user]

Please check the Execution Link of the Pipeline for the Website Draft URL. This is located in the Preview Step behind the Harness VPN and also is available in #hdh_alerts. E.g Website Draft URL: https://unique-id--harness-developer.netlify.app. Current Draft URL is: https://678801680c18801abb7acea1--harness-developer.netlify.app

[SushrutHarness]

One comment, otherwise LGTM, but I'm not a codeowner, so this PR won't merge.

[SushrutHarness]

Suggested change

	In Harness NG pipelines, undefined variables in expressions will cause a pipeline execution error. Unlike FirstGen pipelines, where undefined variables default to `null`, NG requires explicit handling of undefined variables.
	In Harness NG pipelines, undefined variables in expressions will cause a pipeline execution error unlike FirstGen pipelines, where undefined variables default to `null`. NG requires explicit handling of undefined variables.

[bot-gitexp-user]

Please check the Execution Link of the Pipeline for the Website Draft URL. This is located in the Preview Step behind the Harness VPN and also is available in #hdh_alerts. E.g Website Draft URL: https://unique-id--harness-developer.netlify.app. Current Draft URL is: https://678899e6c8572df28fe5440a--harness-developer.netlify.app

[bot-gitexp-user]

Please check the Execution Link of the Pipeline for the Website Draft URL. This is located in the Preview Step behind the Harness VPN and also is available in #hdh_alerts. E.g Website Draft URL: https://unique-id--harness-developer.netlify.app. Current Draft URL is: https://67889daec8572df66fe540e4--harness-developer.netlify.app

[bot-gitexp-user]

Please check the Execution Link of the Pipeline for the Website Draft URL. This is located in the Preview Step behind the Harness VPN and also is available in #hdh_alerts. E.g Website Draft URL: https://unique-id--harness-developer.netlify.app. Current Draft URL is: https://6788af44ab861c404b5260cd--harness-developer.netlify.app