Generified method call shows "cannot convert from Object to boolean" error

Extracted this issue from https://github.com/redhat-developer/vscode-java/issues/3830#issuecomment-2519729457, from @sworthiness

Error:

Type mismatch: cannot convert from Object to boolean Java(16777233)

Environment:

(VS Codium - SSH remote development)

• Version: 1.95.3
• Release: 24321
• Commit: dc5a551c256719475d2d0959270e3836c9bbb632
• Date: 2024-11-16T09:16:49.983Z
• Electron: 32.2.5
• ElectronBuildId: undefined
• Chromium: 128.0.6613.186
• Node.js: 20.18.0
• V8: 12.8.374.38-electron.0
• OS: Windows_NT x64 10.0.19045
• JDK: 17

Steps to reproduce

public class Test {
  public <T> T someMethod() {
    return (T) Boolean.TRUE;
  }

  public void someOtherMethod() {
    if (this.someMethod()) { // Type mismatch: cannot convert from Object to boolean Java(16777233)
    }
  }
}

Current Result

The following compilation error is shown in vs-codium:
Type mismatch: cannot convert from Object to boolean Java(16777233)
The error is not seen if the result of this.someMethod() is stored in a Boolean var first

Expected Result

No compilation error should be seen here

Reproduce the Java snippet in VS Codium with JDK 17 and inspect the diagnostic produced for the generic method call. Done means the direct use of someMethod() in the if condition no longer reports a conversion error, while the shown reproduction remains covered by a regression check.