Fixed issue where firebase init hosting re-prompts for source

[aalej]

Description

Fixes #8587

From what I can tell, the previous behavior of promptOnce and prompt was that, once a question has an answer, we no longer prompt for that question

--- promptOnce

firebase-tools/src/prompt.ts

Lines 108 to 113 in 8cc734b

	export async function promptOnce<A>(question: Question, options: Options = {}): Promise<A> {
	// Need to replace any .'s in the question name - otherwise, Inquirer puts the answer
	// in a nested object like so: `"a.b.c" => {a: {b: {c: "my-answer"}}}`
	question.name = question.name?.replace(/\./g, "/") || "question";
	await prompt(options, [question]);
	return options[question.name];

--- prompt

firebase-tools/src/prompt.ts

Lines 47 to 70 in 8cc734b

	export async function prompt(
	options: Options,
	// NB: If Observables are to be added here, the for loop below will need to
	// be adjusted as well.
	questions: ReadonlyArray<inquirer.DistinctQuestion>,
	): Promise<any> {
	const prompts = [];
	// For each of our questions, if Options already has an answer,
	// we go ahead and _skip_ that question.
	for (const question of questions) {
	if (question.name && options[question.name] === undefined) {
	prompts.push(question);
	}
	}
	if (prompts.length && options.nonInteractive) {
	const missingOptions = Array.from(new Set(prompts.map((p) => p.name))).join(", ");
	throw new FirebaseError(
	`Missing required options (${missingOptions}) while running in non-interactive mode`,
	{
	children: prompts,
	},
	);
	}

Scenarios Tested

Verified that the prompts behave the same as the old versions (14.2.2)

14.2.2 behavior

$ firebase --version
14.2.2
$ firebase init hosting --project PROJECT_ID

     ######## #### ########  ######## ########     ###     ######  ########
     ##        ##  ##     ## ##       ##     ##  ##   ##  ##       ##
     ######    ##  ########  ######   ########  #########  ######  ######
     ##        ##  ##    ##  ##       ##     ## ##     ##       ## ##
     ##       #### ##     ## ######## ########  ##     ##  ######  ########

You're about to initialize a Firebase project in this directory:

  /PATH/orbital-osiris

Before we get started, keep in mind:

  * You are currently outside your home directory


=== Project Setup

First, let's associate this project directory with a Firebase project.
You can create multiple project aliases by running firebase use --add, 
but for now we'll just set up a default project.

i  Using project PROJECT_ID (PROJECT_NAME)

=== Hosting Setup
? Detected an existing Astro codebase in the current directory, should we use this? Yes
? In which region would you like to host server-side content, if applicable? us-central1 (Iowa)
? Set up automatic builds and deploys with GitHub? No

i  Writing configuration info to firebase.json...
i  Writing project information to .firebaserc...

✔  Firebase initialization complete!

branch behavior

$ firebase --version
14.4.0
$ firebase init hosting --project PROJECT_ID

     ######## #### ########  ######## ########     ###     ######  ########
     ##        ##  ##     ## ##       ##     ##  ##   ##  ##       ##
     ######    ##  ########  ######   ########  #########  ######  ######
     ##        ##  ##    ##  ##       ##     ## ##     ##       ## ##
     ##       #### ##     ## ######## ########  ##     ##  ######  ########

You're about to initialize a Firebase project in this directory:

  /PATH/8587


=== Project Setup

First, let's associate this project directory with a Firebase project.
You can create multiple project aliases by running firebase use --add, 
but for now we'll just set up a default project.

i  Using project PROJECT_ID (PROJECT_NAME)

=== Hosting Setup
✔ Detected an existing Astro codebase in the current directory, should we use this? Yes
✔ In which region would you like to host server-side content, if applicable? us-central1 (Iowa)
✔ Set up automatic builds and deploys with GitHub? No

i  Writing configuration info to firebase.json...
i  Writing project information to .firebaserc...

✔  Firebase initialization complete!

Sample Commands

[jamesdaniels]

You could simplify with ||= here for same effect but you really should be using ?? or ??= here since we want false to be a cachable value

[jamesdaniels]

Same feedback for other changed lines

[aalej]

Thanks for the feedback! Will update