Form item modeless tokens

[NateBaldwinDesign]

Description

Added missing Form Item tokens to the modeless collection, referencing the tokens from Platform Scale.

Motivation and context

Forgot to add these to the Layout / modeless collection. Need them in order to publish as Figma variables

Related issue

Types of changes

Patch (bug fixes, typos, mistakes; non-breaking change which fixes an issue)

Minor (add a new token, changing a value, deprecating a token; non-breaking change which adds functionality)

Major (deleting a token, changing token value type, renaming a token by deprecating the old one; fix or feature that would cause existing functionality to change)

Checklist:

I have signed the [Adobe Open Source CLA](https://opensource.adobe.com/cla.html).

I updated the token in all applicable sets. This applies if updating, adding, or deleting a token that has data across different sets (for example, if the value differs across color themes.)

[mrcjhicks]

TESTING spectrum2

READING spectrum-design-data: /spectrum-design-data/packages/tokens/src/
READING tokens studio: /spectrum-tokens-studio-data/src/tokens-studio/spectrum2-colors/
READING tokens studio: /spectrum-tokens-studio-data/src/tokens-studio/spectrum2-non-colors/

SPECTRUM SYNC SUMMARY

NEW TOKENS: (19) base-padding-horizontal-small/desktop, base-padding-horizontal-medium/desktop, base-padding-horizontal-large/desktop, base-padding-horizontal-extra-large/desktop, base-padding-horizontal-2x-large/desktop, base-padding-horizontal-small/mobile, base-padding-horizontal-medium/mobile, base-padding-horizontal-large/mobile, base-padding-horizontal-extra-large/mobile, base-padding-horizontal-2x-large/mobile, group-gap-extra-small-spacious, group-gap-small-spacious, group-gap-medium-spacious, group-gap-large-spacious, group-gap-extra-large-spacious, form-item-gap-small, form-item-gap-medium, form-item-gap-large, form-item-gap-extra-large
DEPRECATED TOKENS: (5) base-padding-horizontal-2x-large, base-padding-horizontal-extra-large, base-padding-horizontal-large, base-padding-horizontal-medium, base-padding-horizontal-small

TEST COMPLETE