fix(analyzer): do not report embedded arguments as VariableNotFound in template keywords

When a test case uses [Template] or Test Template with a keyword that has
embedded arguments (e.g. "The result of ${calculation} should be ${expected}"),
the embedded argument placeholders were incorrectly analyzed as unresolved
variables, producing false VariableNotFound diagnostics.

Skip variable analysis for embedded argument tokens when the keyword call
originates from a template declaration.

Fixes #542

Author: d-biehl

packages/robot/src/robotcode/robot/diagnostics/namespace_analyzer.py

@@ -691,6 +691,7 @@ def _analyze_keyword_call(
         allow_variables: bool = False,
         ignore_errors_if_contains_variables: bool = False,
         unescape_keyword: bool = True,
+        is_template: bool = False,
     ) -> Optional[KeywordDoc]:
         result: Optional[KeywordDoc] = None
 
@@ -776,7 +777,7 @@ def _analyze_keyword_call(
             else:
                 self._keyword_references[result].add(Location(self._document_uri, kw_range))
 
-                if result.is_embedded:
+                if result.is_embedded and not is_template:
                     self._analyze_token_variables(keyword_token)
 
                 if result.errors:
@@ -1099,6 +1100,7 @@ def visit_TestTemplate(self, node: TestTemplate) -> None:  # noqa: N802
                 [],
                 analyze_run_keywords=False,
                 allow_variables=True,
+                is_template=True,
             )
 
         self._test_template = node
@@ -1116,6 +1118,7 @@ def visit_Template(self, node: Template) -> None:  # noqa: N802
                 [],
                 analyze_run_keywords=False,
                 allow_variables=True,
+                is_template=True,
             )
         self._template = node