Magento 2 Override order/tracking/view.phtml tracking file for backend.

To Display Tracking information in the backend view for shipment, Magento 2 uses a order tracking view.phtml file from the Magento_Shipping module.

Full path: Magento/Shipping/view/adminhtml/templates/order/tracking/view.phtml

You can override view.phtml file using layout handle.

Magento uses the view template file at three different layout handle.

1. adminhtml_order_shipment_view.xml (Display track information in shipment page admin panel)
2. adminhtml_order_shipment_removetrack.xml (Delete Tracking info by click on Delete icon shipment page)
3. adminhtml_order_shipment_addtrack.xml (Add new Tracking from admin panel shipment page)

Create a simple module and override using below way,
1. adminhtml_order_shipment_view.xml

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="shipment_tracking">
            <action method="setTemplate">
                <argument name="template" xsi:type="string">Jesadiya_Tracking::order/tracking/view.phtml</argument>
            </action>
        </referenceBlock>
    </body>
</page>

2. adminhtml_order_shipment_removetrack.xml

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="shipment_tracking">
            <action method="setTemplate">
                <argument name="template" xsi:type="string">Jesadiya_Tracking::order/tracking/view.phtml</argument>
            </action>
        </referenceBlock>
    </body>
</page>

3. adminhtml_order_shipment_addtrack.xml

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="shipment_tracking">
            <action method="setTemplate">
                <argument name="template" xsi:type="string">Jesadiya_Tracking::order/tracking/view.phtml</argument>
            </action>
        </referenceBlock>
    </body>
</page>

Create a Template file in your module with adminhtml folder.

Clear Cache and check the shipment page in the admin panel. Your template overrides with the core template file.