Remove redundant threadId conditional spread in session construction

Co-authored-by: Julius Marminge <juliusmarminge@users.noreply.github.com>

Author: cursoragent

apps/server/src/provider/Layers/ClaudeCodeAdapter.ts

@@ -1584,7 +1584,6 @@ function makeClaudeCodeAdapter(options?: ClaudeCodeAdapterLiveOptions) {
           runtimeMode: input.runtimeMode,
           ...(input.cwd ? { cwd: input.cwd } : {}),
           ...(input.model ? { model: input.model } : {}),
-          ...(threadId ? { threadId } : {}),
           resumeCursor: {
             ...(threadId ? { threadId } : {}),
             ...(resumeState?.resume ? { resume: resumeState.resume } : {}),