fix(ttstream): ttstream should not recycle connection when Recv timeout with DisableCancelRemote=true

[DMwangnima]

What type of PR is this?

fix

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.
• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo

(Optional) Translate the PR title into Chinese.

(Optional) More detailed description for this PR(en: English/zh: Chinese).

en:

• Separate RecvTimeout (per-Recv deadline, code 12014) from StreamTimeout (stream ctx deadline, code 12015)
  so that a recv timeout with DisableCancelRemote=true does not close the stream or recycle the connection
• Add canRetry mechanism to Exception: when DisableCancelRemote=true, recv timeout errors are marked retryable
  and streamReader does not persist the error, allowing subsequent Recv calls to continue
• Refactor Pipe: bind ctx and callback at construction time, add ReadCtx for per-read ctx/callback,
  remove Cancel()/pipeStateCanceled, move container package to internal
• RecvMsg now uses context.Background() to derive recv timeout ctx, making it independent from stream ctx
  zh(optional):

(Optional) Which issue(s) this PR fixes:

(optional) The PR that updates user documentation:

[codecov]

Codecov Report

❌ Patch coverage is 95.97315% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.84%. Comparing base (bfa27f3) to head (b2405e4).
⚠️ Report is 47 commits behind head on main.

Files with missing lines	Patch %	Lines
...g/remote/trans/ttstream/internal/container/pipe.go	90.32%	5 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1952      +/-   ##
==========================================
+ Coverage   61.37%   62.84%   +1.46%     
==========================================
  Files         388      394       +6     
  Lines       35063    30267    -4796     
==========================================
- Hits        21521    19020    -2501     
+ Misses      12247     9950    -2297     
- Partials     1295     1297       +2     

Flag	Coverage Δ
integration	51.70% <79.19%> (+1.19%)	⬆️
unit	53.37% <93.95%> (+1.73%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.