enum dropdown in anyOf \ oneOf

Hi! Thanks for the fantastic library!

I have an issue with enums, maybe someone can help me with it.

Given I have a schema:
```
rules: {
type: 'array',
items: {
oneOf: [
{
type: 'object',
properties: {
val: { type: 'number' },
op: {
type: 'string',
enum: ['lessThan', 'greaterThan', 'equals'],
},
},
},
{
type: 'object',
properties: {
val: { type: ['number', 'string'] },
op: {
type: 'string',
enum: ['before', 'after', 'equals'],
},
},
},
{
type: 'object',
properties: {
val: { type: 'string' },
op: {
type: 'string',
enum: ['beginsWith', 'endsWith', 'contains', 'equals',]
},
},
},
],
},
}
```

If I create a rule with any of those types, validation works well and it displays no errors.
However in the `op` field dropdown always only values from ['lessThan', 'greaterThan', 'equals'] displayed.

I've tried if\then schemas, this actually disables enum dropdowns in general and replaces it with a regular string input mode.
I've tried const discriminators, but no luck so far.

Maybe I'm missing something?
I would appreciate any help. Thanks.