PyCharm: Skip files in PYCHARM_PYTHONS dir in tests.

We might have scripts there (on Windows) like `fix_path.cmd`, we need to exclude them


(cherry picked from commit e09ceac554f456a3d8a931e0dfe26872908c303c)

IJ-CR-151567


(cherry picked from commit 8a8d68e41a6bd607622f3b6afa76e5dc878f4236)

IJ-CR-151953

GitOrigin-RevId: 9a463cdc1e0c348c2ffa27f26e64781f5014bd97

python/testSrc/com/jetbrains/env/PyEnvTestSettings.kt

@@ -26,13 +26,13 @@ internal data class PyEnvTestSettings(
   private val foldersWithPythons: List<File> = listOfNotNull(folderWithCPythons, folderWithCondas).map { File(it) }
 
   /**
-   * Paths to all existing python SDKs
+   * Paths to all existing python SDKs (as directories with python installation)
    */
   @TestOnly
   internal val pythons: List<File> = foldersWithPythons
     .filter(File::exists)
     .flatMap { it.listFiles()?.toList() ?: emptyList() }
-    .filter { !it.name.startsWith('.') }
+    .filter { it.isDirectory && !it.name.startsWith('.') }
     .plus(additionalInterpreters)
 
   /**