When using oneOf/dependencies default is not being populated

[TrevorSundberg]

Prerequisites

• I have read the documentation;
• In the case of a bug report, I understand that providing a SSCCE example is tremendously useful to the maintainers.
• Ideally, I'm providing a sample JSFiddle or a shared playground link demonstrating the issue.

Description

Default value does not appear when adding a value, using a combo of array, oneOf, and dependencies:
https://mozilla-services.github.io/react-jsonschema-form/#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

Steps to Reproduce

1. Click the above link in the playground.
2. Remove and add a component
3. Select type A or B
4. Observe that the default value of test for field example is not populated.

Expected behavior

Expect the default value to appear in the example field.

Actual behavior

The example field is always empty and no default value is populated.

Version

"react-jsonschema-form": "^1.7.0",

[TrevorSundberg]

I would also just mention that I saw this PR was completed: #1338 which is the reason I upgraded to 1.7.0, but this behavior is still occuring and occurs on the playground too (assuming the playground is running 1.7.0...)

[MatinF]

This would be really nice to get resolved, it would greatly simplify our form process

[epicfaace]

This will actually be fixed by #1376 -- see the following test case: https://github.com/rjsf-team/react-jsonschema-form/pull/1376/files#diff-0de170772e45d2602c103dd916607787R862

And the following playground links:
first example
second example

[heath-freenome]

This cannot be reproduced any more