Update Backport Script to not Accept Release Branch Name as Patch Release Name (#9053)

* Update backport-pr-to-patch-release.sh to not allow release branch name as patch release name

* Update backport-pr-to-patch-release.sh

Author: mhlidd

tooling/backport-pr-to-patch-release.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 set -e
 
+# PATCH_RELEASE_NAME should be the name of the release that is being done without the patch number. (e.g. v1.2.x)
 PATCH_RELEASE_NAME=$1
 PATCH_RELEASE_BRANCH=release/$PATCH_RELEASE_NAME
 PR_NUMBER=$2
@@ -11,7 +12,7 @@ PR_NUMBER=$2
 # Check if no arguments are provided
 if [ $# -eq 0 ]; then
     echo "Usage: $0 <patch-release-name> <pr-number>"
-    echo "<patch-release-name>: v1.2.x or release/v1.2.x"
+    echo "<patch-release-name>: v1.2.x"
     echo "<pr-number>: PR number to backport"
     exit 1
 fi
@@ -20,9 +21,10 @@ if [ -z "$PATCH_RELEASE_NAME" ]; then
     echo "Patch release name is not provided: $0 <patch-release-name> <pr-number>"
     exit 1
 fi
-# Check patch release name starts with "release/"
-if [[ ! "$PATCH_RELEASE_NAME" =~ ^release/.* ]]; then
-    PATCH_RELEASE_NAME="release/$PATCH_RELEASE_NAME"
+# Check patch release name does not start with "release/"
+if [[ "$PATCH_RELEASE_NAME" =~ ^release/.* ]]; then
+    echo "Patch release name should not be the same as the release branch name. Only include the release name without patch number. (e.g. v1.2.x)"
+    exit 1
 fi
 # Check PR number is provided
 if [ -z "$PR_NUMBER" ]; then