Add metric for time passed from the activity scheduling to the last attempt

Is your feature request related to a problem? Please describe.
If users want to set an alert for activities that keep retrying and failing, there is no appropriate metric to handle that.
activity_succeed_endtoend_latency includes only successful executions.
activity_execution_latency handles the execution of a single activity task only.

Describe the solution you'd like
We should add a metric reporting how much time passed from an activity schedule to the last activity attempt. This metric should have an activity type as a tag and be SDK side.

Describe alternatives you've considered
Users can produce their own custom metrics. But it looks like such a common concern, that Temporal SDK should provide a built-in way to detect it.

GoSDK issue: https://github.com/temporalio/sdk-go/issues/718

Start by locating the Java SDK instrumentation for activity_succeed_endtoend_latency and activity_execution_latency, then trace how activity scheduling and retry attempts are represented. Done means a built-in SDK metric reports elapsed time from scheduling to the last attempt and includes activity type as a tag; the issue names no specific files or tests.