revert: "chore(ecs): clarify it's possible to use image digest on fromEcrRepository" (#27143)

Reverts #27115

Renaming `tag` prop to `tagOrDigest` of the `ContainerImage.fromEcrRepository` function introduces a breaking change, not for typescript users, but for other languages that require specifying the property name when calling the function.

Author: sumupitchayan

packages/@aws-cdk/aws-sagemaker-alpha/lib/container-image.ts

@@ -26,12 +26,9 @@ export interface ContainerImageConfig {
 export abstract class ContainerImage {
   /**
    * Reference an image in an ECR repository
-   *
-   * @param repository ECR repository
-   * @param tagOrDigest Optional image tag or digest (digests must start with `sha256:`)
    */
-  public static fromEcrRepository(repository: ecr.IRepository, tagOrDigest: string = 'latest'): ContainerImage {
-    return new EcrImage(repository, tagOrDigest);
+  public static fromEcrRepository(repository: ecr.IRepository, tag: string = 'latest'): ContainerImage {
+    return new EcrImage(repository, tag);
   }
 
   /**

packages/aws-cdk-lib/aws-ecs/lib/container-image.ts

@@ -18,12 +18,9 @@ export abstract class ContainerImage {
 
   /**
    * Reference an image in an ECR repository
-   *
-   * @param repository ECR repository
-   * @param tagOrDigest Optional image tag or digest (digests must start with `sha256:`)
    */
-  public static fromEcrRepository(repository: ecr.IRepository, tagOrDigest: string = 'latest') {
-    return new EcrImage(repository, tagOrDigest);
+  public static fromEcrRepository(repository: ecr.IRepository, tag: string = 'latest') {
+    return new EcrImage(repository, tag);
   }
 
   /**