docs(rs-platform-wallet/e2e): drop SUPERSEDED TK entries and renumber TK-NNN

User confirmed renumbering is safe — token tests haven't started
implementation yet, no external references to disturb.

- Remove TK-003 and TK-004 (superseded by TK-007 / TK-008 per
  Diziet's investigation).
- Renumber TK-005..TK-016 → TK-003..TK-014 contiguously.
- Renumber TK-003b → TK-005b (it is a P2 variant of the mint case
  which is now TK-005, not of the deleted old TK-003).
- Update Quick index, counts, cross-references, and §5 / §6 wording
  that referred to the old TK-003/TK-004 / Wave D model.

TK-001 / TK-001b / TK-001c retain their numbers (they cover the
operator-pre-funded → in-test-contract reframing, not superseded).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: lklimek