onDidStartTerminalShellExecution is fired before shellIntegration.executeCommand returns

[jrieken]

Testing #208462

• Have a snippet like below
• Run the command and notice how onDidStartTerminalShellExecution is fired before the executeCommand returns
• this makes it impossible to do something special for "your" execution

	vscode.commands.registerCommand('testextension.helloWorld', async (args) => {

		if (!vscode.window.activeTerminal?.shellIntegration) {
			return;
		}

		// const myExec = vscode.window.activeTerminal.shellIntegration.executeCommand('XSW');
		const myExec = vscode.window.activeTerminal.shellIntegration.executeCommand('ls');
		console.log('CREATED', myExec.commandLine)
		active.add(myExec);
	})


	vscode.window.onDidStartTerminalShellExecution(async e => {

		console.log('START', e.commandLine)
		if (active.has(e)) {
			console.log('MY EXEC!')
		}

		active.add(e);

		for await (const item of e.createDataStream()) {
			console.log('CHUNK', item)
		}
	})