refactor: localize env file notification message using l10n.t()

Co-authored-by: edvilme <5952839+edvilme@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsoft/vscode-python-environments/sessions/32215d3b-54dd-4074-a6f7-4906d013f21c

Author: Copilot

src/common/localize.ts

@@ -216,6 +216,9 @@ export namespace ActivationStrings {
         Commands.viewLogs,
     );
     export const activatingEnvironment = l10n.t('Activating environment');
+    export const envFileInjectionDisabled = l10n.t(
+        'An environment file is configured but terminal environment injection is disabled. Enable "python.terminal.useEnvFile" to use environment variables from .env files in terminals.',
+    );
 }
 
 export namespace UvInstallStrings {

src/features/terminal/terminalEnvVarInjector.ts

@@ -10,7 +10,7 @@ import {
     workspace,
     WorkspaceFolder,
 } from 'vscode';
-import { Common } from '../../common/localize';
+import { ActivationStrings, Common } from '../../common/localize';
 import { traceError, traceLog, traceVerbose } from '../../common/logging';
 import { getGlobalPersistentState } from '../../common/persistentState';
 import { resolveVariables } from '../../common/utils/internalVariables';
@@ -223,7 +223,7 @@ export class TerminalEnvVarInjector implements Disposable {
         }
 
         const result = await showInformationMessage(
-            'An environment file is configured but terminal environment injection is disabled. Enable "python.terminal.useEnvFile" to use environment variables from .env files in terminals.',
+            ActivationStrings.envFileInjectionDisabled,
             Common.dontShowAgain,
         );
         if (result === Common.dontShowAgain) {