fix: account "State" field over deprecated "Status"

[monicamico]

Why?

AWS Organizations has introduced a new account State field that replaces the
legacy Status field, providing more granular account lifecycle information
(AWS Cloud Operations Blog, 15 Sep 2025).

• The legacy Status field exposes only three values: ACTIVE, SUSPENDED,
  PENDING_CLOSURE.
• The new State field exposes five: PENDING_ACTIVATION, ACTIVE,
  SUSPENDED, PENDING_CLOSURE, CLOSED.
• Both fields are returned by DescribeAccount, ListAccounts,
  ListAccountsForParent, and ListDelegatedAdministrators between
  September 2025 and September 2026.
• After 9 September 2026 the Status field is removed from API responses,
  leaving only State.

ADF filters accounts using Status == "ACTIVE" in several places. Once
Status is removed, account.get("Status") returns None, so every account
would be treated as inactive and skipped, breaking account bootstrapping,
account management, deployment-map target resolution, and the Terraform
helper org-wide.

Preferring State is also more correct today: an account can report
Status == "ACTIVE" while still completing sign-up, whereas State
distinguishes PENDING_ACTIVATION from ACTIVE. Filtering on
State == "ACTIVE" therefore avoids treating not-yet-activated accounts as
ready.

Reference:
https://aws.amazon.com/blogs/mt/updates-to-account-status-information-in-aws-organizations/

Issue #, if available: Resolve: #812

What?

Description of changes:

• Prefer the new State field and fall back to the deprecated Status field
  (account.get("State", account.get("Status"))) everywhere ADF filters
  accounts by activity, keeping full backward compatibility during the
  transition window and for SDK versions that do not yet return State:
  • adf-build/shared/python/organizations.py
  • adf-build/shared/python/target.py
  • adf-build/shared/helpers/retrieve_organization_accounts.py
  • adf-build/shared/helpers/terraform/get_accounts.py
  • lambda_codebase/account/main.py
• Add unit tests covering State-based filtering (including PENDING_CLOSURE
  and SUSPENDED exclusion) and State taking precedence over Status.

Note: the State field is only returned by botocore/boto3 versions released
after 9 September 2025; the Status fallback keeps ADF working on older SDK
versions until the shared Lambda layer dependencies are bumped.

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