fix(s3): allow import S3 bucket with a legacy name (#30679)

### Issue # (if applicable)

Closes #22640.

### Reason for this change

Customers could not imported S3 bucket that has a legacy name (contains underscore in the name) and use it in CDK Apps.

### Description of changes

This change allowed customer to use S3 buckets legacy names for only the imported S3 buckets, but not for the new ones.

### Description of how you validated changes

Added unit test cases, and integration test cases.

### Checklist
- [X] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/@aws-cdk-testing/framework-integ/test/aws-s3/test/integ.bucket-legacy-naming.js.snapshot/aws-cdk-s3-legacy-name-integ.template.json

@@ -0,0 +1,102 @@
+{
+ "Resources": {
+  "LegacyBucketRoleFF9F72AB": {
+   "Type": "AWS::IAM::Role",
+   "Properties": {
+    "AssumeRolePolicyDocument": {
+     "Statement": [
+      {
+       "Action": "sts:AssumeRole",
+       "Effect": "Allow",
+       "Principal": {
+        "Service": "lambda.amazonaws.com"
+       }
+      }
+     ],
+     "Version": "2012-10-17"
+    }
+   }
+  },
+  "LegacyBucketRoleDefaultPolicyA9F22E7C": {
+   "Type": "AWS::IAM::Policy",
+   "Properties": {
+    "PolicyDocument": {
+     "Statement": [
+      {
+       "Action": "s3:*",
+       "Effect": "Allow",
+       "Resource": [
+        "arn:aws:s3:::my_legacy_bucket2/*",
+        {
+         "Fn::Join": [
+          "",
+          [
+           "arn:",
+           {
+            "Ref": "AWS::Partition"
+           },
+           ":s3:::my_legacy_bucket1/*"
+          ]
+         ]
+        },
+        {
+         "Fn::Join": [
+          "",
+          [
+           "arn:",
+           {
+            "Ref": "AWS::Partition"
+           },
+           ":s3:::my_legacy_bucket3/*"
+          ]
+         ]
+        }
+       ]
+      }
+     ],
+     "Version": "2012-10-17"
+    },
+    "PolicyName": "LegacyBucketRoleDefaultPolicyA9F22E7C",
+    "Roles": [
+     {
+      "Ref": "LegacyBucketRoleFF9F72AB"
+     }
+    ]
+   }
+  }
+ },
+ "Parameters": {
+  "BootstrapVersion": {
+   "Type": "AWS::SSM::Parameter::Value<String>",
+   "Default": "/cdk-bootstrap/hnb659fds/version",
+   "Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
+  }
+ },
+ "Rules": {
+  "CheckBootstrapVersion": {
+   "Assertions": [
+    {
+     "Assert": {
+      "Fn::Not": [
+       {
+        "Fn::Contains": [
+         [
+          "1",
+          "2",
+          "3",
+          "4",
+          "5"
+         ],
+         {
+          "Ref": "BootstrapVersion"
+         }
+        ]
+       }
+      ]
+     },
+     "AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
+    }
+   ]
+  }
+ }
+}