Visual Studio debugging "Failed to decrypt settings. Encrypted settings only be edited through 'func settings add'".

Create an Azure Functions 2.x C# app and associated function
Add local.settings.json, e.g.

```
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"FUNCTIONS_WORKER_RUNTIME": "dotnet",
"WEBSITE_MAX_DYNAMIC_APPLICATION_SCALE_OUT": "1"
},
"AppSettings": {
"local.logging.path": "c:\\temp\\diagnostics\\",
},
"ConnectionStrings": {
"management.webhook": "http://localhost:35617",
"management.circuitbreaker.timespanSeconds": 60
}
}
```
Note that the connection string contains an unexpected value ("management.circuitbreaker.timespanSeconds")

Execute similar layout in WebJobs SDK = no issues
Execute layout in Azure Functions = fail on startup with "Failed to decrypt settings. Encrypted settings only be edited through 'func settings add'."

Error is incorrect and misleading; nothing to do with encryption (as local.settings.json has "IsEncrypted": false) but is in fact due to a failure to parse the "management.circuitbreaker.timespanSeconds": 60 value.

Expected that the error does not refer to encryption but instead refers to "cannot parse settings file" and preferably with the value that is causing the problem,