JSONSchemaType not matching Typescript Type on oneOf with objects

**What version of Ajv are you using? Does the issue happen if you use the latest version?**
8.17.1 - currently latest available version

**Ajv options object**

```typescript
// not needed, just Typescript Types
```

**JSON Schema**

```json
{
"type": "object",
"discriminator": {
"propertyName": "animal"
},
"required": ["animal"],
"oneOf": [
{
"title": "Cat",
"properties": {
"animal": {
"const": "Cat"
},
"food": {
"enum": ["meat", "grass", "fish"],
"type": "string"
}
},
"required": ["food"]
},
{
"title": "Fish",
"properties": {
"animal": {
"const": "Fish"
},
"food": {
"enum": ["insect", "worms"],
"type": "string"
},
"water": {
"enum": ["lake", "sea"],
"type": "string"
}
},
"required": ["food", "water"]
}
]
}
```

**Sample data**

```typescript
// not needed, just Typescript Types
```

**Your code**

```typescript
type AnimalExampleType =
| {
animal: "Cat";
ears: number; // missing in schema intentionally
food: "fish" | "grass" | "meat";
}
| {
animal: "Fish";
food: "insect" | "worms";
water: "lake" | "sea";
};

// should report error in tsc, because 'ears' are missing in 'Cat'
const AnimalExampleSchema_OneOf: JSONSchemaType = {
type: "object",
discriminator: {
propertyName: "animal",
},
required: ["animal"],
oneOf: [
{
title: "Cat",
properties: {
animal: {
const: "Cat",
},
food: {
enum: ["meat", "grass", "fish"],
type: "string",
},
},
required: ["food"],
},
{
title: "Fish",
properties: {
animal: {
const: "Fish",
},
food: {
enum: ["insect", "worms"],
type: "string",
},
water: {
enum: ["lake", "sea"],
type: "string",
},
},
required: ["food", "water"],
},
],
};
```

**Validation result, data AFTER validation, error messages**

```typescript
// no tsc errors appear, even the 'ears' for 'Cat' are missing
```

**What results did you expect?**
tsc to report Type mismatch