Script: Fields API should not throw for disabled field data

[stu-elastic]

Accessing an _id field via field('_id').empty throws an IllegalArgumentException. In addition to missing mapping and missing values, introspecting a field with missing field data should not throw.

[elasticsearchmachine]

Pinging @elastic/es-core-infra (Team:Core/Infra)

[ritikverma2000]

Hi, @stu-elastic I would like to work on this issue I am very new to open source if you could guide me regarding this issue it would be great.

[stu-elastic]

Hi @ritikverma2000, check out the good first issue tag for good places to start.

[ritikverma2000]

Like just wanted to try this issue, if I would be able to do it or not otherwise.I would look into the good first issues if you could suggest a good first issue it would be great.