Fixes a flake seen here: https://github.com/coder/coder/actions/runs/7541558190/job/20528545916
```
=== FAIL: enterprise/provisionerd TestRemoteConnector_Fuzz (0.06s)
t.go:84: 2024-01-16 12:32:27.024 [info] connector: failed provisioner authentication remote_addr=[::1]:45138 ...
error= failed to receive jobID:
github.com/coder/coder/v2/enterprise/provisionerd.(*remoteConnector).authenticate
/home/runner/actions-runner/_work/coder/coder/enterprise/provisionerd/remoteprovisioners.go:438
- bufio.Scanner: token too long
t.go:84: 2024-01-16 12:32:27.024 [debu] connector: closed connection remote_addr=[::1]:45138 error=<nil>
remoteprovisioners_test.go:209:
Error Trace: /home/runner/actions-runner/_work/coder/coder/enterprise/provisionerd/remoteprovisioners_test.go:209
Error: "2992256" is not less than "2097152"
Test: TestRemoteConnector_Fuzz
Messages: should not allow more than 1 MiB
```
This was an attempt to test that malicious actors can't abuse our authentication protocol to make us allocate a bunch of memory.
However, the test asserted on the number of bytes sent by the fuzzer, not the number of bytes read (& allocated) by the service. The former is affected by network queue sizes and is thus flaky without actively managing the socket queues, which I don't think we want to do.
In actual practise, the thing that matters is how much memory the bufio Scanner allocates. By inspection, the scanner will allocate up to 64k, and testing this is true devolves into testing the go standard library, which I don't think is worth doing.
So... let's just drop the assertion because
a) its flaky,
b) it doesn't test what we actually want to test,
c) the behavior we actually care about is part of the standard library.
- Adds a new query BatchUpdateLastUsedAt
- Adds calls to BatchUpdateLastUsedAt in app stats handler upon flush
- Passes a stats flush channel to apptest setup scaffolding and updates unit tests to assert modifications to LastUsedAt.
Cli errors are pretty formatted. This handles nested pretty types. Before it found the first error it could understand and return that. Now it will print the full error stack with more information.
To prevent information loss, a "[Trace=...]" was added to capture some extra error context for debugging.
- refactors`getFormHelpers` to accept an options object
- adds a `maxLength` option which will display a message and character counter for fields with length limits
- set `maxLength` option for template description fields