refactor(ivy): use ɵɵ instead of Δ for now (#29850)

The `Δ` caused issue with other infrastructure, and we are temporarily
changing it to `ɵɵ`.

This commit also patches ts_api_guardian_test and AIO to understand `ɵɵ`.

PR Close #29850

packages/compiler/src/render3/view/template.ts

@@ -848,7 +848,7 @@ export class TemplateDefinitionBuilder implements t.Visitor<void>, LocalResolver
       return trimTrailingNulls(parameters);
     });
 
-    // handle property bindings e.g. ΔelementProperty(1, 'ngForOf', Δbind(ctx.items));
+    // handle property bindings e.g. ɵɵelementProperty(1, 'ngForOf', ɵɵbind(ctx.items));
     const context = o.variable(CONTEXT_NAME);
     this.templatePropertyBindings(template, templateIndex, context, template.templateAttrs);