add textfield prop descriptions

[merkoyep]

closes https://github.com/Shopify/pos-next-react-native/issues/36282

Background

• Updates TextField component docs primarily with NewTextFieldProps(Referencing from the original docs).

https://github.com/Shopify/ui-extensions/assets/81783308/ae9f8d04-54c9-4447-b694-a7765f4db145

Solution

• Edited shared InputField.ts file to add descriptions to InputAction props seen in TextField docs.

• Omitted Props and EmbeddedElementProps sections from old docs.

• Added subsections with generic sections to the page for Guidelines and ContentGuidelines sections.

  🎩

• Visit THIS SPINSTANCE

• Compare it with the old docs noting the omitted props and EmbeddedElementProps sections.

• Read through the TextField component docs.

• Take note of formatting and layout.

• Anything else that is expected for component docs.

Checklist

• [x] I have :tophat:'d these changes
• [x] I have updated relevant documentation

[github-actions[bot]]

We detected some changes in packages/*/package.json or packages/*/src, and there are no updates in the .changeset directory. If the changes are user-facing and should cause a version bump, run yarn changeset to track your changes and include them in the next release CHANGELOG. If you are making simple updates to repo configuration, examples, or documentation, you do not need to add a changeset.