Previously the 'if lru_items:' guard meant that when our catalog returned
an empty list (e.g. a param with no allowed enum values), the Bicep LS
completions (Bicep keywords, schema types) would leak through unchanged.
Now the replace is unconditional for version/param/param_value contexts.
The Bicep LS has no knowledge of our private ACR registry so its output
in these positions is always noise — suppress it even when we have nothing
better to show.
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