azurerm_web_application_firewall_policy : support new type JSChallenge for action property

[sinbai]

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Description

Support new type JSChallenge of action property, since type AnomalyScoring is not supported yet, webapplicationfirewallpolicies.PossibleValuesForActionType() is not used.

PR Checklist

• I have followed the guidelines in our Contributing Documentation.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
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Changes to existing Resource / Data Source

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Change Log

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• azurerm_web_application_firewall_policy - support new type JSChallenge for action property [azurerm_web_application_firewall_policy should support JSChallenge rules #29602]

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 #29602

Note

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

[catriona-m]

Thanks @sinbai LGTM!

[github-actions]

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