🐛 Fix mql failure for customGroup defined implicit arrays

[Bajusz15]

Problem with list resource when defined as implicit array (when defined like []element, there is no failure).
The following query doesn't work as expected:

cnquery> network.routes.first{*}
cannot find field 'list' in resource 'networkRoute'
network.routes.list.first.list: no data available

network {
  interfaces() []networkInterface  // direct array
  routes() networkRoutes // implicit array
}
private networkRoutes {
  []networkRoute // networkRoutes = []networkRoute
  // default routes found on the machine
  defaults() []networkRoute
}

With this change, the query works as expected. Below is explanation:
compileResourceChildAccess returns the wrong type, and then the it fails to access .list.
compileResourceChildAccess should return the child element type, not the implicit array type.

func arrayGetFirstIndexV2(e *blockExecutor, bind *RawData, chunk *Chunk, ref uint64) (*RawData, uint64, error) {
.....
return &RawData{
   	Type:  bind.Type[1:],
   	Value: arr[0],
   }, 0, nil

Alternatively, we can use network.routes.list.first{*} for now, but network.routes.list.first.list: no data available doesn't look right.

[Bajusz15]

@tas50 I'm proposing a fix here, but it needs testing to make sure nothing breaks.

[github-actions]

Test Results

4 656 tests  +1   4 652 ✅ +1   2m 22s ⏱️ +2s
  415 suites ±0       4 💤 ±0 
   31 files   ±0       0 ❌ ±0 

Results for commit bdc0b87. ± Comparison against base commit 55d536a.

♻️ This comment has been updated with latest results.

[Bajusz15]

Without the fix, this would fail with the following error:

--- FAIL: TestResource_List_Builtins (0.01s)
    --- FAIL: TestResource_List_Builtins/customGroups.first.name (0.00s)
        /Users/matebajusz/go/src/go.mondoo.com/cnquery/mql/testutils.go:107: failed to compile code: cannot find field 'name' in customGroups

Same problem that @tas50 noticed with network.routes

[jaym]

Tested. Compiled code makes more sense now