Do not quote isolated in exec module (microsoft#14108)

* Do not quote isolated in exec module

* Revert "Do not quote isolated in exec module"

This reverts commit b9fa04c.

* Revert "IPyKernel install issue with windows paths (microsoft#13667)"

This reverts commit 23725ab.

Author: karthiknadig

src/client/common/process/internal/python.ts

@@ -28,7 +28,7 @@ export function execCode(code: string, isolated = true): string[] {
 export function execModule(name: string, moduleArgs: string[], isolated = true): string[] {
     const args = ['-m', name, ...moduleArgs];
     if (isolated) {
-        args[0] = ISOLATED.fileToCommandArgument();
+        args[0] = ISOLATED; // replace
     }
     // "code" isn't specific enough to know how to parse it,
     // so we only return the args.

src/client/common/process/internal/scripts/index.ts

@@ -306,7 +306,7 @@ export function shell_exec(command: string, lockfile: string, shellArgs: string[
     // We don't bother with a "parse" function since the output
     // could be anything.
     return [
-        ISOLATED.fileToCommandArgument(),
+        ISOLATED,
         script,
         command.fileToCommandArgument(),
         // The shell args must come after the command

src/test/common/moduleInstaller.test.ts

@@ -140,7 +140,7 @@ import { closeActiveWindows, initializeTest } from './../initialize';
 
 chai_use(chaiAsPromised);
 
-const isolated = path.join(EXTENSION_ROOT_DIR_FOR_TESTS, 'pythonFiles', 'pyvsc-run-isolated.py').replace(/\\/g, '/');
+const isolated = path.join(EXTENSION_ROOT_DIR_FOR_TESTS, 'pythonFiles', 'pyvsc-run-isolated.py');
 
 const info: PythonEnvironment = {
     architecture: Architecture.Unknown,