Fix #8632 - API V8 /meta/fields/{moduleName} endpoint output without field labels

[ssamko0911]

Description

See the issue:
#8632

Motivation and Context

'Include field labels into field description'

1. Without field labels, API consumers must manually map field names to their corresponding labels, making development more difficult.
2. There's a slight typo, which makes additional information not available:

• there is no such key as 'comments'
  

Updated:

Thanks!

How To Test This

See the issue:
#8632

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Final checklist

• My code follows the code style of this project found here.
• My change requires a change to the documentation.
• I have read the How to Contribute guidelines.

[mattlorimer]

LGTM 👍🏻

[johnM2401]

User can see Labels now when calling metadata API

One thing to note though, is that the labels will be shown in English, unlike other metadata calls, as these are the ones on the default vardefs.

Assuming this is expected, LGTM!

Thank you!