azurerm_application_insights_workbook - fix update display_name without tags

[teowa]

• resolves azurerm_application_insights_workbook, cannot change workbook display_name #22113

TF_ACC=1 go test -v ./internal/services/applicationinsights -parallel 50 -test.run=TestAccApplicationInsightsWorkbook_ -timeout 1440m -ldflags="-X=github.com/hashicorp/terraform-provider-azurerm/version.ProviderVersion=acc"
=== RUN   TestAccApplicationInsightsWorkbook_basic
=== PAUSE TestAccApplicationInsightsWorkbook_basic
=== RUN   TestAccApplicationInsightsWorkbook_requiresImport
=== PAUSE TestAccApplicationInsightsWorkbook_requiresImport
=== RUN   TestAccApplicationInsightsWorkbook_complete
=== PAUSE TestAccApplicationInsightsWorkbook_complete
=== RUN   TestAccApplicationInsightsWorkbook_updateDisplanName
=== PAUSE TestAccApplicationInsightsWorkbook_updateDisplanName
=== RUN   TestAccApplicationInsightsWorkbook_update
=== PAUSE TestAccApplicationInsightsWorkbook_update
=== RUN   TestAccApplicationInsightsWorkbook_hiddenTitleInTags
=== PAUSE TestAccApplicationInsightsWorkbook_hiddenTitleInTags
=== CONT  TestAccApplicationInsightsWorkbook_basic
=== CONT  TestAccApplicationInsightsWorkbook_updateDisplanName
=== CONT  TestAccApplicationInsightsWorkbook_complete
=== CONT  TestAccApplicationInsightsWorkbook_hiddenTitleInTags
=== CONT  TestAccApplicationInsightsWorkbook_update
=== CONT  TestAccApplicationInsightsWorkbook_requiresImport
--- PASS: TestAccApplicationInsightsWorkbook_hiddenTitleInTags (6.70s)
--- PASS: TestAccApplicationInsightsWorkbook_basic (133.02s)
--- PASS: TestAccApplicationInsightsWorkbook_requiresImport (137.27s)
--- PASS: TestAccApplicationInsightsWorkbook_complete (156.84s)
--- PASS: TestAccApplicationInsightsWorkbook_updateDisplanName (160.42s)
--- PASS: TestAccApplicationInsightsWorkbook_update (273.28s)
PASS
ok      github.com/hashicorp/terraform-provider-azurerm/internal/services/applicationinsights   276.837s

[catriona-m]

Thanks @teowa - I have left a couple of minor comments inline here but can take another look once those get fixed up. Thanks!

[catriona-m]

Thanks for making those changes @teowa - LGTM!

[github-actions]

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