chore: Merge 2.0.0 dev branch to master

[lantoli]

Description

Merge 2.0.0 dev branch to master

Link to any related issue(s): CLOUDP-320243

Type of change:

• Bug fix (non-breaking change which fixes an issue). Please, add the "bug" label to the PR.
• New feature (non-breaking change which adds functionality). Please, add the "enhancement" label to the PR. A migration guide must be created or updated if the new feature will go in a major version.
• Breaking change (fix or feature that would cause existing functionality to not work as expected). Please, add the "breaking change" label to the PR. A migration guide must be created or updated.
• This change requires a documentation update
• Documentation fix/enhancement

Required Checklist:

• I have signed the MongoDB CLA
• I have read the contributing guides
• I have checked that this change does not generate any credentials and that they are NOT accidentally logged anywhere.
• I have added tests that prove my fix is effective or that my feature works per HashiCorp requirements
• I have added any necessary documentation (if appropriate)
• I have run make fmt and formatted my code
• If changes include deprecations or removals I have added appropriate changelog entries.
• If changes include removal or addition of 3rd party GitHub actions, I updated our internal document. Reach out to the APIx Integration slack channel to get access to the internal document.

Further comments

[github-actions]

APIx bot: a message has been sent to Docs Slack channel

[Copilot]

Pull Request Overview

This PR merges the 2.0.0 development branch to master, bringing significant updates to the MongoDB Atlas Terraform provider including new migration examples, updated documentation with version guidance, and enhanced resource attribute configurations.

• Adds comprehensive migration examples for org invitations to cloud user assignments
• Updates cluster resource examples to use new array syntax throughout documentation
• Introduces new example configurations for atlas user migration workflows

Reviewed Changes

Copilot reviewed 300 out of 733 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
examples/migrate_org_invitation_to_cloud_user_org_assignment/*	New migration example showing transition from org invitations to cloud user assignments
examples/migrate_atlas_user_and_atlas_users/*	Complete migration workflow examples for atlas user data sources
docs/resources/*	Updated resource documentation with subcategory headers and new array syntax
docs/troubleshooting.md	Updated cluster configuration syntax to use array format
docs/guides/*	Updated migration guides with version compatibility information

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[Copilot]

[nitpick] The comment should clarify that this environment variable is completely unnecessary for version 2.0+ rather than just 'skip this'. Consider: '# not required for version 2.0 or later'

Suggested change

	export MONGODB_ATLAS_PREVIEW_PROVIDER_V2_ADVANCED_CLUSTER=true # skip this if using version 2.0 or later
	export MONGODB_ATLAS_PREVIEW_PROVIDER_V2_ADVANCED_CLUSTER=true # not required for version 2.0 or later

[Copilot]

[nitpick] The step refers to 'MongoDB Atlas Provider 2.0.0' but should refer to 'versions lower than 2.0' for consistency with the parenthetical note.

[Copilot]

The documentation shows hour_of_day as Required, but this conflicts with the comment on line 50 that says it defaults to 0. Either the field should be Optional or the default behavior should be clarified.

Suggested change

	* `hour_of_day` - (Required) Hour of the day when you would like the maintenance window to start. This parameter uses the 24-hour clock, where midnight is 0, noon is 12 (Time zone is UTC).
	* `hour_of_day` - (Optional) Hour of the day when you would like the maintenance window to start. This parameter uses the 24-hour clock, where midnight is 0, noon is 12 (Time zone is UTC). Defaults to 0 if not specified.

[lantoli]

addressed in: #3668