Disable more flaky tests

[alexr00]

No description provided.

[Copilot]

Pull request overview

This PR updates the VS Code API test suite to reduce CI flakiness by disabling additional run_in_terminal assertions in the chat tool tests.

Changes:

• Skips the “echo command returns exactly the echoed text” test in the sandbox off suite.
• Skips the “multi-line output preserves all lines in order” test in the sandbox off suite.

Comments suppressed due to low confidence (1)

extensions/vscode-api-tests/src/singlefolder-tests/chat.runInTerminal.test.ts:209

• This test is now skipped without any context on what makes it flaky or a link to a tracking issue. Please add a brief note (preferably with a GitHub issue/number) so there is an owner and a clear path to re-enable the test.

		test.skip('multi-line output preserves all lines in order', async function () {
			this.timeout(60000);