fix(bicep): replace LS completions entirely for version/param/param_value contexts

For specific LRU contexts (version, param, param_value), the Bicep LS was
appending its own random/irrelevant completions alongside the LRU catalog
items. The LS has no knowledge of the private ACR registry, so its suggestions
in these positions are noise.

Now the LS items are discarded entirely for these three contexts. LS items
are still kept (below LRU items) for module_path and unknown contexts.

ilsp/bicep_lsp/proxy.py

@@ -202,14 +202,24 @@ def _inject_completions(msg: dict[str, Any], context: dict | None = None) -> byt
         lru_items = BicepModuleCatalog.as_completion_items()
 
     if lru_items:
-        for item in items:
-            st = item.get("sortText", item.get("label", ""))
-            item["sortText"] = f"1_az_{st}"
-        if isinstance(result, list):
-            msg["result"] = lru_items + items
+        if ctx_type in ("version", "param", "param_value"):
+            # Replace LS completions entirely — the Bicep LS doesn't know about
+            # the private registry, so its suggestions here are noise/random.
+            if isinstance(result, list):
+                msg["result"] = lru_items
+            else:
+                result["items"] = lru_items
+                result["isIncomplete"] = False
         else:
-            result["items"] = lru_items + items
-            result["isIncomplete"] = True
+            # module_path / unknown: keep LS completions below ours
+            for item in items:
+                st = item.get("sortText", item.get("label", ""))
+                item["sortText"] = f"1_az_{st}"
+            if isinstance(result, list):
+                msg["result"] = lru_items + items
+            else:
+                result["items"] = lru_items + items
+                result["isIncomplete"] = True
 
     return json.dumps(msg).encode()