{AzureContainerApp} fixes Azure/azure-cli-extensions#5781 fix for 'NoneType' object does not support item assignment

[navba-MSFT]

fixes #5781

fix for TypeError: 'NoneType' object does not support item assignment while running the az containerapp dapr enable command

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[yonzhan]

AzureContainerApp

[calleo]

Hi, I've submitted as PR for this problem here: #5782

[StrawnSC]

I still get an error when I try to use this code for enabling dapr:

We should add safe_gets in lines 2371 and 2374 with a default=[] so that we don't get "None type is not iterable" errors

[Juliehzl]

could you try to add test for the none type scenario in https://github.com/Azure/azure-cli-extensions/blob/main/src/containerapp/azext_containerapp/tests/latest/test_containerapp_commands.py#L583

[Juliehzl]

make sure command work

[zhoxing-ms]

@navba-MSFT Could you please resolve these CI issues?