refactor(ivy): deprecate ɵɵinject and ɵɵdefineInjectable (#30362)

- They are to be removed before the end of RC

PR Close #30362

packages/core/src/di/index.ts

@@ -14,11 +14,11 @@
 
 export * from './metadata';
 export {InjectFlags} from './interface/injector';
-export {ΔdefineInjectable, defineInjectable, ΔdefineInjector, InjectableType, InjectorType} from './interface/defs';
+export {ΔdefineInjectable, defineInjectable, ɵɵdefineInjectable, ΔdefineInjector, InjectableType, InjectorType} from './interface/defs';
 export {forwardRef, resolveForwardRef, ForwardRefFn} from './forward_ref';
 export {Injectable, InjectableDecorator, InjectableProvider} from './injectable';
 export {Injector} from './injector';
-export {Δinject, inject, INJECTOR} from './injector_compatibility';
+export {Δinject, inject, ɵɵinject, INJECTOR} from './injector_compatibility';
 export {ReflectiveInjector} from './reflective_injector';
 export {StaticProvider, ValueProvider, ConstructorSansProvider, ExistingProvider, FactoryProvider, Provider, TypeProvider, ClassProvider} from './interface/provider';
 export {ResolvedReflectiveFactory, ResolvedReflectiveProvider} from './reflective_provider';

packages/core/src/di/injector_compatibility.ts

@@ -139,6 +139,12 @@ export function Δinject<T>(token: Type<T>| InjectionToken<T>, flags = InjectFla
  */
 export const inject = Δinject;
 
+/**
+ * @deprecated delete by v8, use `inject`.
+ * @codeGenApi
+ */
+export const ɵɵinject = Δinject;
+
 /**
  * Injects `root` tokens in limp mode.
  *

packages/core/src/di/interface/defs.ts

@@ -147,6 +147,13 @@ export function ΔdefineInjectable<T>(opts: {
  */
 export const defineInjectable = ΔdefineInjectable;
 
+/**
+ * @deprecated delete before v8. Use `defineInjectable`, which is also deprecated, but will be
+ * around until v10.
+ * @publicApi
+ */
+export const ɵɵdefineInjectable = ΔdefineInjectable;
+
 /**
  * Construct an `InjectorDef` which configures an injector.
  *