fix(@angular-devkit/schematics-cli): correctly transform numbers from prompts

[alan-agius4]

This commits ports the same logic from the @angular/cli (

angular-cli/packages/angular/cli/src/command-builder/schematics-command-module.ts

Lines 183 to 211 in 693d78b

	if (validator) {
	question.validate = (input) => validator(input);
	// Filter allows transformation of the value prior to validation
	question.filter = async (input) => {
	for (const type of definition.propertyTypes) {
	let value;
	switch (type) {
	case 'string':
	value = String(input);
	break;
	case 'integer':
	case 'number':
	value = Number(input);
	break;
	default:
	value = input;
	break;
	}
	// Can be a string if validation fails
	const isValid = (await validator(value)) === true;
	if (isValid) {
	return value;
	}
	}
	return input;
	};
	}

) to correctly handle numbers in prompts.

Closes #24817

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