Team Members tab: control sizing, white background, table/filter padding #241

Part of #237.

Problem

Buttons, inputs, and container padding in the Team Members tab are larger than needed
and sit on a light-gray background.

Figma design.

Scope

• Decrease button and input sizes.
• Change background from light-gray to white.
• Decrease padding on the table container.
• Adjust padding on the filters container.
• Decrease the input size in the filters panel.

Files

• src/authz-module/team-members/TeamMembersTable.tsx — DataTable with TableControlBar, TextFilter.
• src/authz-module/components/TableControlBar/* — SearchFilter.tsx, OrgFilter.tsx,
  RolesFilter.tsx, ScopesFilter.tsx, TableControlBar.tsx.
• src/authz-module/index.scss — .pgn__data-table-wrapper { padding: 1rem; } and
  .filters rules; body bg-light-200.

Notes

• Table container padding lives in .authz-module .pgn__data-table-wrapper (1rem).
• Filter inputs/buttons: pass size="sm" on Paragon controls; tighten .filters spacing.
• Background: move affected surface from bg-light-200 to white.

Acceptance criteria

• Smaller buttons/inputs, tighter table + filter padding, white background.
• No pagination/filter/sort behavior regressions.