Update the time for each request

[jakubno]

Note

Centralizes envd init request body construction in the retry function, adding a per-attempt timestamp and updating the call site accordingly.

• Orchestrator Sandbox (packages/orchestrator/internal/sandbox/envd.go):
  • doRequestWithInfiniteRetries: Refactored signature to accept envVars and hyperloopIP; constructs JSON body internally with envVars, hyperloopIP, accessToken, and a per-attempt timestamp.
  • initEnvd: Updated to use the new API (no local JSON marshalling); uses http.MethodPost and passes envVars and hyperloopIP to the retry function.

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