feat(tck): implement dissociateToken JSON-RPC method

[iron-prog]

Description

Add support for the dissociateToken TCK JSON-RPC method by mirroring the
existing associateToken implementation.

• Add DissociateTokenParams
• Add DissociateTokenResponse
• Add the dissociateToken JSON-RPC handler using TokenDissociateTransaction

Related issue(s)

Fixes #2418

Notes for reviewer

• Implementation mirrors the existing associateToken handler.
• Reuses the existing commonTransactionParams flow.
• Returns a status-only response, consistent with the TCK specification.

Checklist

• Documented
• Tested

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 967d04f7-1ecf-4f99-9a02-05179ec4efab

📥 Commits

Reviewing files that changed from the base of the PR and between e8513a2 and 2302bf2.

📒 Files selected for processing (3)

• tck/handlers/token.py
• tck/param/token.py
• tck/response/token.py

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Walkthrough

The TCK server adds the dissociateToken JSON-RPC method, including parameter validation, TokenDissociateTransaction construction, optional common transaction parameters, receipt status validation, and a status-only response.

Changes

Dissociate token RPC

Layer / File(s)	Summary
Dissociation request and response contracts tck/param/token.py, tck/response/token.py	Adds DissociateTokenParams with accountId, tokenIds, sessionId, and common transaction parameters, plus DissociateTokenResponse extending StatusOnlyResponse.
Transaction construction and RPC execution tck/handlers/token.py	Registers dissociateToken, builds and executes TokenDissociateTransaction, and returns the validated receipt status.

Estimated code review effort: 2 (Simple) | ~10 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Client
  participant dissociate_token
  participant TokenDissociateTransaction
  participant HederaNetwork
  Client->>dissociate_token: dissociateToken(params)
  dissociate_token->>TokenDissociateTransaction: build with accountId and tokenIds
  dissociate_token->>TokenDissociateTransaction: apply commonTransactionParams
  TokenDissociateTransaction->>HederaNetwork: execute without waiting for receipt
  HederaNetwork-->>dissociate_token: transaction receipt status
  dissociate_token-->>Client: DissociateTokenResponse(status)

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🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: adding the dissociateToken JSON-RPC method.
Description check	✅ Passed	The description clearly matches the implemented dissociateToken support and related files.
Linked Issues check	✅ Passed	The changes satisfy #2418 by adding the handler, params, and status-only response for dissociateToken.
Out of Scope Changes check	✅ Passed	No unrelated or out-of-scope changes are evident beyond the requested dissociateToken implementation.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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View plan used: #2418

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[github-actions]

👋 Hi @iron-prog! Great work completing a Beginner issue! 🎉

Thanks for your contribution! 🚀

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