fix(@angular/cli): correctly set default array values

Previously, default array values were being incorrectly treated as strings.

Author: alan-agius4

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

@@ -204,13 +204,18 @@ export abstract class SchematicsCommandModule
                     ? {
                         name: item,
                         value: item,
-                        checked: item === definition.default,
+                        checked: Array.isArray(definition.default)
+                          ? definition.default?.includes(item)
+                          : item === definition.default,
                       }
                     : {
                         ...item,
                         name: item.label,
                         value: item.value,
-                        checked: item.value === definition.default,
+                        checked: Array.isArray(definition.default)
+                          ? // eslint-disable-next-line @typescript-eslint/no-explicit-any
+                            definition.default?.includes(item.value as any)
+                          : item.value === definition.default,
                       },
                 ),
               });

packages/angular/cli/src/command-builder/utilities/json-schema.ts

@@ -197,15 +197,19 @@ export async function parseJsonSchemaToOptions(
       .filter((value) => isValidTypeForEnum(typeof value))
       .sort() as (string | true | number)[];
 
-    let defaultValue: string | number | boolean | undefined = undefined;
+    let defaultValue: string | number | boolean | unknown[] | undefined = undefined;
     if (current.default !== undefined) {
       switch (types[0]) {
         case 'string':
-        case 'array':
           if (typeof current.default == 'string') {
             defaultValue = current.default;
           }
           break;
+        case 'array':
+          if (Array.isArray(current.default)) {
+            defaultValue = current.default;
+          }
+          break;
         case 'number':
           if (typeof current.default == 'number') {
             defaultValue = current.default;