bug: kubectl kcp bind apiexport does not support . in APIExport name

[yastij]

Describe the bug

while testing binding to an APIExport in a different workspace, @fabriziopandini and I noticed that binding to an export with a . in the name is not working when using kubectl kcp bind apiexport. when applying the APIBinding resource everything works as expected

Steps To Reproduce

1. create an APIExport with a . (e.g. bar.dev) in the name in workspace foo
2. from another workspace run kubectl kcp bind apiexport root:foo:bar.dev --name bar-binding
3. you will get the following:

error: fully qualified reference to workspace where APIExport exists is required. The format is `<logical-cluster-name>:<apiexport>` or `<full>:<path>:<to>:<apiexport>`

Expected Behaviour

I would expect the bind to succeed

Additional Context

tested from the main branch

[kcp-ci-bot]

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[kcp-ci-bot]

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