PY-82119 Packaging: Fix env tests for conda

Signed-off-by: Nikita.Ashihmin <nikita.ashihmin@jetbrains.com>

GitOrigin-RevId: 47286211e8ca894aa2e04c3f65528a2ab22fc37c

python/openapi/src/com/jetbrains/python/packaging/PyPackage.java

@@ -51,8 +51,12 @@ public final class PyPackage extends InstalledPackage {
     return myLocation;
   }
 
+  /**
+   * @deprecated Return always true, becuase all packages found are installed.
+   */
+  @Deprecated(forRemoval = true)
   public boolean isInstalled() {
-    return myLocation != null;
+    return true;
   }
 
   @Override