refactor(migrations): Switch control flow migration reformat default to true (#52971)

This switches the default behavior of the control flow migration template reformatting from opt-in to opt-out.

PR Close #52971

packages/core/schematics/ng-generate/control-flow-migration/migration.ts

@@ -19,7 +19,7 @@ import {canRemoveCommonModule, formatTemplate, processNgTemplates, removeImports
  */
 export function migrateTemplate(
     template: string, templateType: string, node: ts.Node, file: AnalyzedFile,
-    format: boolean = false): {migrated: string, errors: MigrateError[]} {
+    format: boolean = true): {migrated: string, errors: MigrateError[]} {
   let errors: MigrateError[] = [];
   let migrated = template;
   if (templateType === 'template') {

packages/core/schematics/ng-generate/control-flow-migration/schema.json

@@ -14,7 +14,7 @@
       "type": "boolean",
       "description": "Enables reformatting of your templates",
       "x-prompt": "Should the migration reformat your templates?",
-      "default": "false"
+      "default": "true"
     }
   }
 }