[Java] invalid "import" statement for GITHUB.COM api

Found as part of https://github.com/microsoft/kiota/pull/7774:

Using the source code from 2026-06-17 and this command:

```
.\it\generate-code.ps1 -descriptionUrl https://raw.githubusercontent.com/github/rest-api-description/refs/heads/main/descriptions/api.github.com/api.github.com.json -language java -dev
.\it\exec-cmd.ps1 -descriptionUrl https://raw.githubusercontent.com/github/rest-api-description/refs/heads/main/descriptions/api.github.com/api.github.com.json -language java
```

The generated client does not compile:

```
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.15.0:compile (default-compile) on project kiota-gh-api: Compilation failure
[ERROR] /c:/path/to/kiota/it/java/gh/src/main/java/apisdk/repos/item/item/contents/item/WithPathItemRequestBuilder.java:[10,21] cannot find symbol
[ERROR] symbol: class WithPath
[ERROR] location: package apisdk.models
```

The offending line is
```
import apisdk.models.WithPath;
```

After having removed it in the generated client, it seems to compile.

Run the two commands in the issue with the GitHub API description and inspect the generated Java file at it/java/gh/src/main/java/apisdk/repos/item/item/contents/item/WithPathItemRequestBuilder.java. Trace why it emits the unresolved import apisdk.models.WithPath, then verify that the generated client compiles without that invalid import.

Written by the indexing model from the issue text.