Fix: Revert part of fix for rjsf-team#1654 that was causing rjsf-team#3412 (rjsf-team#3414)

Fixes: rjsf-team#3412 by reverting the last change made to `getSchemaType()` The type inference from `anyOf`/`oneOf` that was added to fix rjsf-team#1654 actually caused a worse bug, and without it the inference now happens properly due to other fixes somehow - In `@rjsf/utils`, reverted the type inference from `anyOf`/`oneOf` - Updated the `CHANGELOG.md` accordingly

Author: heath-freenome

CHANGELOG.md

@@ -45,6 +45,7 @@ should change the heading of the (upcoming) version to include a major version b
 - Added `enumOptionsIndexForValue()`, `enumOptionsIsSelected()`, `enumOptionsValueForIndex()` functions to support fixing [#1494](https://github.com/rjsf-team/react-jsonschema-form/issues/1494)
  - Updated `enumOptionsDeselectValue()`, `enumOptionsSelectValue()` and `optionId()` to use indexes instead of values
  - Deleted the `processSelectValue()` that was added in the beta and is no longer needed
+- Updated `getSchemaType()` to remove the inference of type from `anyOf`/`oneOf`, fixing [#3412](https://github.com/rjsf-team/react-jsonschema-form/issues/3412)
 
 ## Dev / docs / playground
 - Updated the `utility-functions` documentation for the new and updated methods mentioned above, as well as deleting the documentation for `processSelectValue()`

packages/utils/src/getSchemaType.ts

@@ -29,14 +29,6 @@ export default function getSchemaType<S extends StrictRJSFSchema = RJSFSchema>(
  return "object";
  }
 
- if (!type && Array.isArray(schema.oneOf) && schema.oneOf.length) {
- return getSchemaType<S>(schema.oneOf[0] as S);
- }
-
- if (!type && Array.isArray(schema.anyOf) && schema.anyOf.length) {
- return getSchemaType<S>(schema.anyOf[0] as S);
- }
-
  if (Array.isArray(type) && type.length === 2 && type.includes("null")) {
  type = type.find((type) => type !== "null");
  }

packages/utils/test/getSchemaType.test.ts

@@ -61,22 +61,6 @@ const cases: { schema: object; expected: string | undefined }[] = [
  schema: { enum: ["foo"] },
  expected: "string",
  },
- {
- schema: { oneOf: [] },
- expected: undefined,
- },
- {
- schema: { oneOf: [{ type: "string" }] },
- expected: "string",
- },
- {
- schema: { anyOf: [] },
- expected: undefined,
- },
- {
- schema: { anyOf: [{ type: "number" }] },
- expected: "number",
- },
  {
  schema: {},
  expected: undefined,