Docs for Release/v4.0.0 (#1012)

* fix: restore breaking change documentation for powerplatform_managed_environment attributes

* chore: remove deprecated breaking and fixed change logs for 4.0.0 release

* Update .changes/4.0.0.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update 4.0.0.md

* Update CHANGELOG for breaking changes in 4.0.0

This release removes deprecated attributes and introduces new ones for powerplatform_managed_environment.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: mawasile

.changes/4.0.0.md

@@ -0,0 +1,14 @@
+## 4.0.0 - 2025-12-16
+
+> [!IMPORTANT]
+> This is a breaking release, powerplatform_managed_environment **maker_onboarding_markdown** and **maker_onboarding_url** are now removed.
+
+### 💥 Breaking
+
+* [#1000](https://github.com/microsoft/terraform-provider-power-platform/issues/1000) powerplatform_managed_environment removing no longer supported attributes (maker_onboarding_markdown, maker_onboarding_url) added new attributes (power_automate_is_sharing_disabled, copilot_allow_grant_editor_permissions_when_shared, copilot_limit_sharing_mode, copilot_max_limit_user_sharing)
+
+### 🪲 Fixed
+
+* [#931](https://github.com/microsoft/terraform-provider-power-platform/issues/931) Fixed error when environment is part of an Environment Group by adding warning instead of error when managed environment settings cannot be applied
+* [#984](https://github.com/microsoft/terraform-provider-power-platform/issues/984) Deprecate tenant_id attribute in tenant capacity data source and migrate to new API endpoint with expanded response structure
+* [#1006](https://github.com/microsoft/terraform-provider-power-platform/issues/1006) Handle 404 status on environment read/delete as deleted resource instead of fatal error

.changes/unreleased/fixed-20251022-124634.yaml

@@ -7,6 +7,21 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html),
 and is generated by [Changie](https://github.com/miniscruff/changie).
 
 
+## 4.0.0 - 2025-12-16
+
+> [!IMPORTANT]
+> This is a breaking release, powerplatform_managed_environment **maker_onboarding_markdown** and **maker_onboarding_url** are now removed.
+
+### 💥 Breaking
+
+* [#1000](https://github.com/microsoft/terraform-provider-power-platform/issues/1000) powerplatform_managed_environment removing no longer supported attributes (maker_onboarding_markdown, maker_onboarding_url) added new attributes (power_automate_is_sharing_disabled, copilot_allow_grant_editor_permissions_when_shared, copilot_limit_sharing_mode, copilot_max_limit_user_sharing)
+
+### 🪲 Fixed
+
+* [#931](https://github.com/microsoft/terraform-provider-power-platform/issues/931) Fixed error when environment is part of an Environment Group by adding warning instead of error when managed environment settings cannot be applied
+* [#984](https://github.com/microsoft/terraform-provider-power-platform/issues/984) Deprecate tenant_id attribute in tenant capacity data source and migrate to new API endpoint with expanded response structure
+* [#1006](https://github.com/microsoft/terraform-provider-power-platform/issues/1006) Handle 404 status on environment read/delete as deleted resource instead of fatal error
+
 ## 3.9.1 - 2025-10-06
 
 ### 🪲 Fixed