bug: `syncedResources` state should be Pending when APIResourceImport is missing

[lionelvillard]

Describe the bug

The SyncTarget reconciler sets the syncedResources state (for a given resource) to Incompatible when no corresponding APIResourceImport object is found. The Incompatible state indicates the resource schema is incompatible with the physical cluster schema, which I think in this case is wrong. The Pending state is better as it indicates the syncer was not able to report compatibility of the resource yet.

This line of code should be changed: https://github.com/kcp-dev/kcp/blob/main/pkg/reconciler/workload/synctargetexports/synctargetcompatible_reconcile.go#L118

Steps To Reproduce

Create a SyncTarget.

Expected Behaviour

Set state to Pending.

Additional Context

No response

[rahulii]

/assign

[mjudeikis]

/transfer-issue contrib-tmc

[mjudeikis]

/transfer-issue contrib-tmc