You will never find that bracket I’m guessing, however, there are a couple ways around your dilemma.
You can use the Blowsion generic steering cable bracket:
https://www.blowsion.com/products/h...sories/pole-accessories/steering-cable-holder
Or, you can find a junk squarenose handlepole and drill out the 4 rivets attaching the squarenose cable bracket to the handlepole and use the oem squarenose cable bracket.
I have used both personally, either one works fine, you just need to take your time and measure for the correct spot to drill for the 2 holes to attach either bracket.