azurerm_windows_web_app, azurerm_linux_web_app, azurerm_windows_function_app, azurerm_linux_function_app - Terraform will no longer plan when site_config.0.cors are the default values

[mbfrahry]

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Description

There was a perpetual diff caused by cors that can only be fixed by setting that field as Optional/Computed

PR Checklist

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Changes to existing Resource / Data Source

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Testing

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Change Log

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• azurerm_windows_web_app, azurerm_linux_web_app, azurerm_windows_function_app, azurerm_linux_function_app - site_config.0.cors is now Optional/Computed to fix a perpetual diff [GH-00000]

This is a (please select all that apply):

• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Related Issue(s)

Fixes #22879

Note

If this PR changes meaningfully during the course of review please update the title and description as required.

[jackofallops]

Thanks @mbfrahry - LGTM 👍