Properly clean-up for old env var value

Author: anthonykim1

src/features/terminal/shells/bash/bashConstants.ts

@@ -1,3 +1,5 @@
 export const BASH_ENV_KEY = 'VSCODE_PYTHON_BASH_ACTIVATE';
 export const ZSH_ENV_KEY = 'VSCODE_PYTHON_ZSH_ACTIVATE';
+export const BASH_OLD_ENV_KEY = 'VSCODE_BASH_ACTIVATE';
+export const ZSH_OLD_ENV_KEY = 'VSCODE_ZSH_ACTIVATE';
 export const BASH_SCRIPT_VERSION = '0.1.1';

src/features/terminal/shells/fish/fishConstants.ts

@@ -1,2 +1,3 @@
-export const FISH_ENV_KEY = 'VSCODE_FISH_ACTIVATE';
+export const FISH_ENV_KEY = 'VSCODE_PYTHON_FISH_ACTIVATE';
+export const FISH_OLD_ENV_KEY = 'VSCODE_FISH_ACTIVATE';
 export const FISH_SCRIPT_VERSION = '0.1.1';

src/features/terminal/shells/pwsh/pwshConstants.ts

@@ -1,2 +1,3 @@
 export const POWERSHELL_ENV_KEY = 'VSCODE_PYTHON_PWSH_ACTIVATE';
+export const POWERSHELL_OLD_ENV_KEY = 'VSCODE_PWSH_ACTIVATE';
 export const PWSH_SCRIPT_VERSION = '0.1.1';