fix: aws_acm_certificate_validation uses create timestamp as id for validation not certificate arn

.changelog/24453.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_acm_certificate_validation: Restore certificate issuance timestamp as the resource `id` value, fixing error on existing resource Read
+```

internal/service/acm/certificate_validation.go

@@ -90,24 +90,25 @@ func resourceCertificateValidationCreate(d *schema.ResourceData, meta interface{
 		return fmt.Errorf("waiting for ACM Certificate (%s) to be issued: %w", arn, err)
 	}
 
-	d.SetId(arn)
+	d.SetId(aws.TimeValue(certificate.IssuedAt).String())
 
 	return resourceCertificateValidationRead(d, meta)
 }
 
 func resourceCertificateValidationRead(d *schema.ResourceData, meta interface{}) error {
 	conn := meta.(*conns.AWSClient).ACMConn
 
-	certificate, err := FindCertificateValidationByARN(conn, d.Id())
+	arn := d.Get("certificate_arn").(string)
+	certificate, err := FindCertificateValidationByARN(conn, arn)
 
 	if !d.IsNewResource() && tfresource.NotFound(err) {
-		log.Printf("[WARN] ACM Certificate %s not found, removing from state", d.Id())
+		log.Printf("[WARN] ACM Certificate %s not found, removing from state", arn)
 		d.SetId("")
 		return nil
 	}
 
 	if err != nil {
-		return fmt.Errorf("reading ACM Certificate (%s): %w", d.Id(), err)
+		return fmt.Errorf("reading ACM Certificate (%s): %w", arn, err)
 	}
 
 	d.Set("certificate_arn", certificate.CertificateArn)

internal/service/acm/certificate_validation_test.go

@@ -233,7 +233,7 @@ func testAccCheckAcmCertificateValidationExists(n string) resource.TestCheckFunc
 
 		conn := acctest.Provider.Meta().(*conns.AWSClient).ACMConn
 
-		_, err := tfacm.FindCertificateValidationByARN(conn, rs.Primary.ID)
+		_, err := tfacm.FindCertificateValidationByARN(conn, rs.Primary.Attributes["certificate_arn"])
 
 		if err != nil {
 			return err