postfix removing body of bounced messages

I've noticed for messages that fail to deliver with postfix, the body of the message is removed. Here's an example (real emails replaced with temps):

--5F54EFCA0A.1653443634/MYDOMAIN.COM
Content-Description: Delivery report
Content-Type: message/delivery-status

Reporting-MTA: dns; MYDOMAIN.COM
X-Postfix-Queue-ID: 5F54EFCA0A
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Wed, 25 May 2022 01:47:13 +0000 (UTC)

Final-Recipient: rfc822; [email protected]
Original-Recipient: rfc822;[email protected]
Action: delayed
Status: 4.2.1
Remote-MTA: dns; alt1.gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 450-4.2.1 The user you are trying to contact is
    receiving mail at a rate that 450-4.2.1 prevents additional messages from
    being delivered. Please resend your 450-4.2.1 message at a later time. If
    the user is able to receive mail at that 450-4.2.1 time, your message will
    be delivered. For more information, please 450-4.2.1 visit 450 4.2.1
    https://support.google.com/mail/?p=ReceivingRate
    i9-20020a544089000000b0032b06b69e67si10079646oii.275 - gsmtp
Will-Retry-Until: Mon, 30 May 2022 01:47:13 +0000 (UTC)

--5F54EFCA0A.1653443634/MYDOMAIN.COM
Content-Description: Undelivered Message Headers
Content-Type: text/rfc822-headers
Content-Transfer-Encoding: 8bit

Return-Path: <[email protected]>
Received: from [XX.XX.XX.XX] (localhost [127.0.0.1])
    by MYDOMAIN.COM (Postfix) with ESMTP id 5F54EFCA0A
    for <[email protected]>; Wed, 25 May 2022 01:47:13 +0000 (UTC)
Content-Type: multipart/mixed; boundary="===============9070788644322080819=="
MIME-Version: 1.0
Subject: MY SUBJECT
From: [email protected]
To: [email protected]
Message-Id: <[email protected]>
Date: Wed, 25 May 2022 01:47:13 +0000 (UTC)

--5F54EFCA0A.1653443634/MYDOMAIN.COM--
*** HEADER EXTRACTED deferred/3/3E377FD67F ***
named_attribute: encoding=8bit
*** MESSAGE FILE END deferred/3/3E377FD67F ***

I'm wondering are any of the below options possible? Just trying to find a way to avoid losing the original message whenever there's a bounce.

1. Is there a way to stop postfix from generating this message and instead just place the original message in the deferred queue?
2. Or, can I change how quickly it removes the original message and replaces it with this one?
3. Or, is there a way to customize the format to make sure the original message's body content is included?

That message is not necessarily undeliverable, just undelivered. It was not accepted by Google yet. It might be, as stated, "at a later time". I think the confusion stems from "bounce" being generally understood as "undeliverable, returned in full".

But this sample is just a notification about a delay, as seen in the subject and Action: delayed. These notifications deliberately only reference the original message: it would additionally later be returned in full if and when it is permanently rejected, or if it is still not delivered at the time specified in Will-Retry-Until.

Just trying to find a way to avoid losing the original message whenever there's a bounce.

The message is not lost.

1. Postfix has queued this message, as is, including the body. The code provided with X-Postfix-Queue-ID: 5F54EFCA0A is the name of the queue file. Using the postcat(1) command the admin can be retrieve it, including the body - until delivery or return.
2. You can configure delay_warning_time to warn about delays at a later time (or not at all). Do not disable this feature if you have users who do understand and make use of delay notifications.
3. Your can configure maximal_queue_lifetime to define how long postfix should attempt to retry delivery when faced it temporary errors. I do not recommend to change this.