Fix title and placeholder for python selection when using create env command (#20896)

Closes #19891


![image](https://user-images.githubusercontent.com/3840081/227031948-de595993-80e1-43a0-8dd8-658848c6b3d5.png)

Author: karthiknadig

src/client/common/utils/localize.ts

@@ -440,7 +440,7 @@ export namespace CreateEnv {
         export const created = l10n.t('Environment created...');
         export const installingPackages = l10n.t('Installing packages...');
         export const errorCreatingEnvironment = l10n.t('Error while creating virtual environment.');
-        export const selectPythonQuickPickTitle = l10n.t('Select a python to use for environment creation');
+        export const selectPythonPlaceHolder = l10n.t('Select a python to create the virtual environment');
         export const providerDescription = l10n.t('Creates a `.venv` virtual environment in the current workspace');
         export const error = l10n.t('Creating virtual environment failed with error.');
         export const tomlExtrasQuickPickTitle = l10n.t('Select optional dependencies to install from pyproject.toml');

src/client/pythonEnvironments/creation/provider/venvCreationProvider.ts

@@ -166,6 +166,8 @@ export class VenvCreationProvider implements CreateEnvironmentProvider {
                             {
                                 skipRecommended: true,
                                 showBackButton: true,
+                                placeholder: CreateEnv.Venv.selectPythonPlaceHolder,
+                                title: null,
                             },
                         );
                     } catch (ex) {