No error shown for duplicate component names in device type import

[candlerb]

Deployment Type

Self-hosted

NetBox Version

v3.7.2

Python Version

3.8

Steps to Reproduce

Go to Device Types > Import and paste in the following YAML

---
manufacturer: APC
model: AP7868-test
slug: apc-ap7868-test
u_height: 0
power-ports:
  - name: Power Port 1
    type: cs8365c
  - name: Power Port 2
    type: cs8365c
  - name: Power Port 2
    type: cs8365c

(trimmed from case in discussion #15182)

Expected Behavior

An error to be displayed (ideally identifying the duplicate component name)

Observed Behavior

Netbox silently returns to the import screen. There is no indication that there was an error, but the import does not complete.