[sdk-platform-java] GAPIC HttpJson additional_bindings annotation is not being used

Discovered while implementing Showcase testing for the ComplianceSuite. This fails the `Compliance.RepeatDataPathTrailingResource` test case: `Testing group: `Binding selection testing`- RPC Name: `Compliance.RepeatDataPathResource` with Request Name: `Binding testing additional binding`.

The path template for `Compliance.RepeatDataPathResource`:
`/v1beta1/repeat/{info.fString=first/*}/{info.fChild.fString=second/*}/bool/{info.fBool}:pathresource`. The data is
```
"info": {
"fString": "second/greetings",
"pBool": true,

"fChild": {
"fString": "first/hello"
}
}
```
Since `info.fString` exists, it spliced in as `second/greetings` and `info.fChild.fString` exists, so it's spliced in as `first/hello`. But the path template is expecting something matching `first/*` which `second/greetings` doesn't match. This is same issue with `second/**` not matching with `first/hello`.

The additional_binding for this RPC is `/v1beta1/repeat/{info.fChild.fString=first/*}/{info.fString=second/*}/bool/{info.fBool}:childfirstpathresource` and this will match the pathTemplate correctly.

Our logic is wrong in that:
1. It doesn't validate the match
2. Doesn't even have logic to check the additional_bindings

Error Logs:
Java side:
```
Caused by: com.google.api.client.http.HttpResponseException: 400 Bad Request
GET http://localhost:7469/v1beta1/repeat/second/greetings/first/hello/bool/false:pathresource?fInt64=0&info.pBool=true&intendedBindingUri=/v1beta1/repeat/%7Binfo.f_child.f_string%3Dfirst/*%7D/%7Binfo.f_string%3Dsecond/*%7D/bool/%7Binfo.f_bool%7D:childfirstpathresource&serverVerify=true&name=Binding%20testing%20additional%20binding&info.fString=second/greetings&fInt32=0&fDouble=0.0&info.fChild.fString=first/hello
{"error":{"code":400,"message":"unrecognized request: GET \"/v1beta1/repeat/second/greetings/first/hello/bool/false:pathresource?fInt64=0\u0026info.pBool=true\u0026intendedBindingUri=/v1beta1/repeat/%7Binfo.f_child.f_string%3Dfirst/*%7D/%7Binfo.f_string%3Dsecond/*%7D/bool/%7Binfo.f_bool%7D:childfirstpathresource\u0026serverVerify=true\u0026name=Binding%20testing%20additional%20binding\u0026info.fString=second/greetings\u0026fInt32=0\u0026fDouble=0.0\u0026info.fChild.fString=first/hello\"","details":null,"Body":"","Header":null,"Errors":null}}
```

Showcase Server:
```
2023/03/07 18:02:36 unrecognized request: GET "/v1beta1/repeat/second/greetings/first/hello/bool/false:pathresource?fInt64=0&info.pBool=true&intendedBindingUri=/v1beta1/repeat/%7Binfo.f_child.f_string%3Dfirst/*%7D/%7Binfo.f_string%3Dsecond/*%7D/bool/%7Binfo.f_bool%7D:childfirstpathresource&serverVerify=true&name=Binding%20testing%20additional%20binding&info.fString=second/greetings&fInt32=0&fDouble=0.0&info.fChild.fString=first/hello"
```