Uploading form containing duplicate properties (with different capitalization) - information in the warning

#### Problem description
If a user tries to add a form or a new version of a form containing duplicate properties there’s the warning “The entity definition within the form is invalid. Multiple Form Fields cannot be saved to a single property.”
If a new version of a form tries to add the duplicate property the users sees more information (which property cannot be added).
#### Steps to reproduce the problem
1. In “Forms” tab click “+New” and upload the form containing 2 properties (with different capitalization).
[movie entities (1).xlsx.txt](https://github.com/user-attachments/files/18093634/movie.entities.1.xlsx.txt)
#### Screenshot


#### Expected behavior
There could be more information about the duplicate property in all warnings.
#### Central version shown in version.txt

https://staging.getodk.cloud/
versions:
20878c7ffe3b92a2b9f35bb253e6043e5ddba67b (v2024.2.1-11-g20878c7)
+c9b8bef4652436d7d055d8777d9e84966ecba661 client (v2024.2.1-57-gc9b8bef4)
+313da04aaa3133978a3ef31dcc3cdc63bbbc152a server (v2024.2.0-118-g313da04a)
https://test.getodk.cloud/
versions:
801ab503c74eaa24b27a226622eceee9351d5db0 (v2024.2.1-10-g801ab50)
+5e95312bc6177ed79f170d8851da39fe327219d4 client (v2024.2.1-63-g5e95312b)
+4355d9e4c3a0f7bb6b694aad4cf318145905da2e server (v2024.2.0-114-g4355d9e4)