fix: reconcile access application custom attributes logic

[BSFishy]

Utilize new functionality in cloudflare-go to properly handle Access application custom attributes. Previously, this would not update on the API side when the list was empty.

fixes #3986

[github-actions]

changelog detected ✅

[jacobbednarz]

acceptance tests all passing

TF_ACC=1 go test ./internal/sdkv2provider -v -run "^TestAccCloudflareAccessApplication_" -count 1 -timeout 120m -parallel 1
=== RUN   TestAccCloudflareAccessApplication_BasicZone
--- PASS: TestAccCloudflareAccessApplication_BasicZone (3.09s)
=== RUN   TestAccCloudflareAccessApplication_BasicAccount
--- PASS: TestAccCloudflareAccessApplication_BasicAccount (2.83s)
=== RUN   TestAccCloudflareAccessApplication_WithSCIMConfigHttpBasic
--- PASS: TestAccCloudflareAccessApplication_WithSCIMConfigHttpBasic (1.75s)
=== RUN   TestAccCloudflareAccessApplication_UpdateSCIMConfig
--- PASS: TestAccCloudflareAccessApplication_UpdateSCIMConfig (1.75s)
=== RUN   TestAccCloudflareAccessApplication_WithSCIMConfigInvalidMappingSchema
--- PASS: TestAccCloudflareAccessApplication_WithSCIMConfigInvalidMappingSchema (9.20s)
=== RUN   TestAccCloudflareAccessApplication_WithSCIMConfigHttpBasicMissingRequired
--- PASS: TestAccCloudflareAccessApplication_WithSCIMConfigHttpBasicMissingRequired (1.39s)
=== RUN   TestAccCloudflareAccessApplication_WithSCIMConfigOAuthBearerToken
--- PASS: TestAccCloudflareAccessApplication_WithSCIMConfigOAuthBearerToken (1.89s)
=== RUN   TestAccCloudflareAccessApplication_WithSCIMConfigOAuth2
--- PASS: TestAccCloudflareAccessApplication_WithSCIMConfigOAuth2 (1.72s)
=== RUN   TestAccCloudflareAccessApplication_WithSCIMConfigOAuth2MissingRequired
--- PASS: TestAccCloudflareAccessApplication_WithSCIMConfigOAuth2MissingRequired (1.40s)
=== RUN   TestAccCloudflareAccessApplication_WithSCIMConfigAuthenticationInvalid
--- PASS: TestAccCloudflareAccessApplication_WithSCIMConfigAuthenticationInvalid (1.46s)
=== RUN   TestAccCloudflareAccessApplication_WithCORS
--- PASS: TestAccCloudflareAccessApplication_WithCORS (4.21s)
=== RUN   TestAccCloudflareAccessApplication_WithSAMLSaas
--- PASS: TestAccCloudflareAccessApplication_WithSAMLSaas (2.99s)
=== RUN   TestAccCloudflareAccessApplication_WithSAMLSaas_Import
=== PAUSE TestAccCloudflareAccessApplication_WithSAMLSaas_Import
=== RUN   TestAccCloudflareAccessApplication_WithOIDCSaas
--- PASS: TestAccCloudflareAccessApplication_WithOIDCSaas (2.95s)
=== RUN   TestAccCloudflareAccessApplication_WithOIDCSaas_Import
=== PAUSE TestAccCloudflareAccessApplication_WithOIDCSaas_Import
=== RUN   TestAccCloudflareAccessApplication_WithAutoRedirectToIdentity
--- PASS: TestAccCloudflareAccessApplication_WithAutoRedirectToIdentity (5.81s)
=== RUN   TestAccCloudflareAccessApplication_WithEnableBindingCookie
--- PASS: TestAccCloudflareAccessApplication_WithEnableBindingCookie (2.69s)
=== RUN   TestAccCloudflareAccessApplication_WithCustomDenyFields
--- PASS: TestAccCloudflareAccessApplication_WithCustomDenyFields (2.80s)
=== RUN   TestAccCloudflareAccessApplication_WithADefinedIdps
--- PASS: TestAccCloudflareAccessApplication_WithADefinedIdps (4.18s)
=== RUN   TestAccCloudflareAccessApplication_WithMultipleIdpsReordered
--- PASS: TestAccCloudflareAccessApplication_WithMultipleIdpsReordered (8.57s)
=== RUN   TestAccCloudflareAccessApplication_WithHttpOnlyCookieAttribute
--- PASS: TestAccCloudflareAccessApplication_WithHttpOnlyCookieAttribute (2.83s)
=== RUN   TestAccCloudflareAccessApplication_WithHTTPOnlyCookieAttributeSetToFalse
--- PASS: TestAccCloudflareAccessApplication_WithHTTPOnlyCookieAttributeSetToFalse (2.76s)
=== RUN   TestAccCloudflareAccessApplication_WithSameSiteCookieAttribute
--- PASS: TestAccCloudflareAccessApplication_WithSameSiteCookieAttribute (2.66s)
=== RUN   TestAccCloudflareAccessApplication_WithLogoURL
--- PASS: TestAccCloudflareAccessApplication_WithLogoURL (2.84s)
=== RUN   TestAccCloudflareAccessApplication_WithSkipInterstitial
--- PASS: TestAccCloudflareAccessApplication_WithSkipInterstitial (2.74s)
=== RUN   TestAccCloudflareAccessApplication_WithAppLauncherVisible
--- PASS: TestAccCloudflareAccessApplication_WithAppLauncherVisible (2.65s)
=== RUN   TestAccCloudflareAccessApplication_WithSelfHostedDomains
--- PASS: TestAccCloudflareAccessApplication_WithSelfHostedDomains (4.66s)
=== RUN   TestAccCloudflareAccessApplication_WithDefinedTags
--- PASS: TestAccCloudflareAccessApplication_WithDefinedTags (4.89s)
=== RUN   TestAccCloudflareAccessApplication_WithReusablePolicies
--- PASS: TestAccCloudflareAccessApplication_WithReusablePolicies (5.06s)
=== RUN   TestAccCloudflareAccessApplication_WithAppLauncherCustomization
--- PASS: TestAccCloudflareAccessApplication_WithAppLauncherCustomization (2.84s)
=== RUN   TestAccCloudflareAccessApplication_AuthTypeForcesNewResource
--- PASS: TestAccCloudflareAccessApplication_AuthTypeForcesNewResource (5.98s)
=== CONT  TestAccCloudflareAccessApplication_WithSAMLSaas_Import
--- PASS: TestAccCloudflareAccessApplication_WithSAMLSaas_Import (3.67s)
=== CONT  TestAccCloudflareAccessApplication_WithOIDCSaas_Import
--- PASS: TestAccCloudflareAccessApplication_WithOIDCSaas_Import (3.63s)
PASS
PASS	github.com/cloudflare/terraform-provider-cloudflare/internal/sdkv2provider	109.012s
PASS

[github-actions]

This functionality has been released in v4.42.0 of the Terraform Cloudflare Provider.

Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!