Using omitExtraData with oneOf disables the input for other fields

[tjbugh]

Prerequisites

• I have searched the existing issues
• I understand that providing a SSCCE example is tremendously useful to the maintainers.
• I have read the documentation
• Ideally, I'm providing a sample JSFiddle, Codesandbox.io or preferably a shared playground link demonstrating the issue.

What theme are you using?

core

Version

5.6.2

Current Behavior

When
  using a schema that defines an object with properties, as well as contains the oneOf keyword
and
  enabling omitExtraData plus liveOmit
then
  the properties defined directly on the object can not be written to.

Example schema:

{
  "title": "A registration form",
  "type": "object",
  "properties": {
    "unwritableField": {
      "type": "string"
    }
  },
  "oneOf": [
    {
      "type": "object",
      "properties": {
        "someField": {
          "type": "number"
        }
      }
    }
  ]
}

Expected Behavior

I expect to be able to write to all defined properties, not just the properties inside the oneOf.

Steps To Reproduce

1. Go to this provided playground
2. Try to input data in the "unwritableField"

Environment

rjsf playground

Anything else?

Using omitExtraData creates a list of known properties and removes all properties not in the list, but this list does not contain all properties. Link to code

It seems to me that the problem is an early return in the toSchemaPath function, that returns if the schema contains a oneOf keyword. Link to code

Issue #1628 seems to be kind of related.