fix(core): Fix data decryption on credentials import (#7560)

Due to a change, during the credentials import command, the core's
Credential object is being called through its prototype. This caused the
Credential's cipher variable to not be set, thus no cipher service being
available during import. This fix catches this edge case and provides a
fix.

packages/cli/test/integration/commands/credentials.cmd.test.ts

@@ -0,0 +1,47 @@
+import * as Config from '@oclif/config';
+
+import { InternalHooks } from '@/InternalHooks';
+import { ImportCredentialsCommand } from '@/commands/import/credentials';
+import { LoadNodesAndCredentials } from '@/LoadNodesAndCredentials';
+import * as testDb from '../shared/testDb';
+import { mockInstance } from '../shared/utils';
+
+beforeAll(async () => {
+	mockInstance(InternalHooks);
+	mockInstance(LoadNodesAndCredentials);
+	await testDb.init();
+});
+
+beforeEach(async () => {
+	await testDb.truncate(['Credentials']);
+});
+
+afterAll(async () => {
+	await testDb.terminate();
+});
+
+test('import:credentials should import a credential', async () => {
+	const config: Config.IConfig = new Config.Config({ root: __dirname });
+	const before = await testDb.getAllCredentials();
+	expect(before.length).toBe(0);
+	const importer = new ImportCredentialsCommand(
+		['--input=./test/integration/commands/importCredentials/credentials.json'],
+		config,
+	);
+	const mockExit = jest.spyOn(process, 'exit').mockImplementation(() => {
+		throw new Error('process.exit');
+	});
+
+	await importer.init();
+	try {
+		await importer.run();
+	} catch (error) {
+		expect(error.message).toBe('process.exit');
+	}
+	const after = await testDb.getAllCredentials();
+	expect(after.length).toBe(1);
+	expect(after[0].name).toBe('cred-aws-test');
+	expect(after[0].id).toBe('123');
+	expect(after[0].nodesAccess).toStrictEqual([]);
+	mockExit.mockRestore();
+});