fix(enterprise-teams): remove Read-after-Create/Update — set computed fields directly from API response

[vmvarela]

Description

Reviewer feedback: Create and Update should not call Read at the end. Computed fields must be set directly from the API response object returned by Create/Update.

Acceptance Criteria

• resourceGithubEnterpriseTeamCreate: set all computed fields (e.g. slug, html_url) directly from the API response; remove trailing Read call
• resourceGithubEnterpriseTeamUpdate: same — set computed fields directly; remove trailing Read call
• resourceGithubEnterpriseTeamOrganizationsCreate: same pattern
• resourceGithubEnterpriseTeamOrganizationsUpdate: same pattern
• Verify make build passes

Notes

Upstream PR: integrations#3008