Reduce all uses of Unstructured to the simpler form, and avoid asking
for mapper or typer unless it is required. Use Typed() for places that
previously used VersionedObject, and remove paths for versioned objects
from code that is now using unstructured.
Automatic merge from submit-queue (batch tested with PRs 51301, 50497, 50112, 48184, 50993)
Introduce new flag "--include-uninitialized" to kubectl
**What this PR does / why we need it**:
Introduce `--include-uninitialized` as a global flag to kubectl
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#49035
**Special notes for your reviewer**:
/assign @caesarxuchao @smarterclayton @ahmetb @deads2k
**Release note**:
```release-note
Add flag "--include-uninitialized" to kubectl annotate, apply, edit-last-applied, delete, describe, edit, get, label, set. "--include-uninitialized=true" makes kubectl commands apply to uninitialized objects, which by default are ignored if the names of the objects are not provided. "--all" also makes kubectl commands apply to uninitialized objects. Please see the [initializer](https://kubernetes.io/docs/admin/extensible-admission-controllers/) doc for more details.
```
This patch adds a new helper function to cmd/util/helpers.go that
handles errors containing collections of causes and prints each cause in
a separate newline.