[JS] Expected accpet breaking change 3

flatten properties :
old model
```
model ModelA {
B: boolean;
C: string;
}
```
new model
```
model A {
B: boolean;
C: string;
}
model ModelA' {
properties: A;
}
```

breaking:
```
Interface XX no longer has parameter B
Interface XX no longer has parameter C
Interface XX has a new required parameter properties
```
note :
breaking may be `Interface XX has a new optional parameter properties`