Keyword should exist performance (#4457)

Don't look for possible recommendations. Fixes #4470.

atest/robot/standard_libraries/builtin/keyword_should_exist.robot

@@ -31,6 +31,9 @@ Keyword does not exist
 Keyword does not exist with custom message
     Check Test Case  ${TESTNAME}
 
+Recommendations not shown if keyword does not exist
+    Check Test Case  ${TESTNAME}
+
 Duplicate keywords
     Check Test Case  ${TESTNAME}
 

atest/testdata/standard_libraries/builtin/keyword_should_exist.robot

@@ -45,6 +45,10 @@ Keyword does not exist with custom message
     [Documentation]  FAIL Custom message
     Non Existing  Custom message
 
+Recommendations not shown if keyword does not exist
+    [Documentation]  FAIL No keyword with name 'should be eQQual' found.
+    should be eQQual
+
 Duplicate keywords
     [Documentation]  FAIL
     ...  Multiple keywords with name 'Duplicated keyword' found. \

src/robot/libraries/BuiltIn.py

@@ -3266,7 +3266,7 @@ def keyword_should_exist(self, name, msg=None):
         See also `Variable Should Exist`.
         """
         try:
-            runner = self._namespace.get_runner(name)
+            runner = self._namespace.get_runner(name, recommend_on_failure=False)
         except DataError as error:
             raise AssertionError(msg or error.message)
         if isinstance(runner, UserErrorHandler):

src/robot/running/namespace.py

@@ -215,9 +215,9 @@ def reload_library(self, libname_or_instance):
         library.reload()
         return library
 
-    def get_runner(self, name):
+    def get_runner(self, name, recommend_on_failure=True):
         try:
-            return self._kw_store.get_runner(name)
+            return self._kw_store.get_runner(name, recommend_on_failure)
         except DataError as error:
             return UserErrorHandler(error, name)
 
@@ -257,13 +257,13 @@ def _get_lib_by_instance(self, instance):
                 return lib
         self._no_library_found(instance)
 
-    def get_runner(self, name):
+    def get_runner(self, name, recommend=True):
         runner = self._get_runner(name)
         if runner is None:
-            self._raise_no_keyword_found(name)
+            self._raise_no_keyword_found(name, recommend)
         return runner
 
-    def _raise_no_keyword_found(self, name):
+    def _raise_no_keyword_found(self, name, recommend=True):
         if name.strip(': ').upper() == 'FOR':
             raise KeywordError(
                 f"Support for the old FOR loop syntax has been removed. "
@@ -276,10 +276,13 @@ def _raise_no_keyword_found(self, name):
                 "loop, remove escaping backslashes and end the loop with 'END'."
             )
         message = f"No keyword with name '{name}' found."
-        finder = KeywordRecommendationFinder(self.user_keywords,
-                                             self.libraries,
-                                             self.resources)
-        raise KeywordError(finder.recommend_similar_keywords(name, message))
+        if recommend:
+            finder = KeywordRecommendationFinder(self.user_keywords,
+                                                 self.libraries,
+                                                 self.resources)
+            raise KeywordError(finder.recommend_similar_keywords(name, message))
+        else:
+            raise KeywordError(message)
 
     def _get_runner(self, name):
         if not name: