(DOCSP-24589): Flutter indexable fields

[mongodben]

Pull Request Info

Update documentation on indexable fields to include all indexable fields that have been added in realm/realm-dart#875.

Jira

• https://jira.mongodb.org/browse/DOCSP-24589

Staged Changes (Requires MongoDB Corp SSO)

• Define a Realm Object Schema (Flutter)

Review Guidelines

REVIEWING.md

[github-actions]

Readability for Commit Hash: 1962e60

You can see any previous Readability scores (if they exist) by looking
at the comment's history.

Flesch Reading Ease scores for changed documents:

• source/sdk/flutter/realm-database/define-realm-object-schema: 49.82

The following table can be helpful in assessing the readability score of a document.

Score	Difficulty
90-100	Very Easy
80-89	Easy
70-79	Fairly Easy
60-69	Medium
50-59	Fairly Hard
30-49	Hard
0-29	Very Hard

[dacharyc]

LGTM, although it weirdly bothers me that the data type capitalization is not consistent. I understand it though.