Issue #3595533: Hide empty request sections, collapse inventory, and use end-user "Service" terminology

Frank Mablyrequested to merge
issue/pdv-3595533:3595533-vault-page-hide into 1.x

This MR ships the vault-page UX cleanup plus the end-user terminology change, as one change.

Vault page UX

  • Omit the Access requests / Store requests sections when nothing is pending (no permanently-empty tables).
  • Collapse the Active grants and Service access inventory sections by default, with a one-line description above each (grants = a single item; trust = a whole kind).

End-user terminology: Consumer -> Service

  • Rename the end-user-facing "Consumer" to "Service" across the vault owner flow (consent, trust, grants, vault page).
  • Admin and consumer-entity screens keep "Consumer" (the consumer entity / consumers module). Code, comments and the @consumer message placeholders are unchanged.

Translatable scope labels

  • The Read/Write scope column was rendered from a raw class constant, so it could never be translated. It now goes through a scopeLabel() helper using a scope string context (FR: Lecture / Ecriture).

Translations

  • Bundled French translations (translations/fr.po) refreshed to match.

phpcs (Drupal, DrupalPractice), phpstan and the VaultOwnerUiTest functional test all pass locally.

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