Add semantic_text to mapping_all_types and switch to TranslationAware in PushFiltersToSource (elastic#118982)

* Add semantic_text to mapping-all-types.json and switch to TranslationAware in PushFiltersToSource

* Continue to use FullTextFunction for now

---------

Co-authored-by: Elastic Machine <[email protected]>

Author: ioanatia

x-pack/plugin/esql/qa/testFixtures/src/main/resources/mapping-all-types.json

@@ -59,6 +59,10 @@
         },
         "wildcard": {
             "type": "wildcard"
+        },
+        "semantic_text": {
+            "type": "semantic_text",
+            "inference_id": "foo_inference_id"
         }
     }
 }

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/optimizer/rules/physical/local/PushFiltersToSource.java

@@ -31,7 +31,6 @@
 import org.elasticsearch.xpack.esql.core.util.CollectionUtils;
 import org.elasticsearch.xpack.esql.core.util.Queries;
 import org.elasticsearch.xpack.esql.expression.function.fulltext.FullTextFunction;
-import org.elasticsearch.xpack.esql.expression.function.fulltext.Term;
 import org.elasticsearch.xpack.esql.expression.function.scalar.ip.CIDRMatch;
 import org.elasticsearch.xpack.esql.expression.function.scalar.spatial.BinarySpatialFunction;
 import org.elasticsearch.xpack.esql.expression.function.scalar.spatial.SpatialRelatesFunction;
@@ -252,8 +251,6 @@ static boolean canPushToSource(Expression exp, LucenePushdownPredicates lucenePu
                 && Expressions.foldable(cidrMatch.matches());
         } else if (exp instanceof SpatialRelatesFunction spatial) {
             return canPushSpatialFunctionToSource(spatial, lucenePushdownPredicates);
-        } else if (exp instanceof Term term) {
-            return term.field() instanceof FieldAttribute && DataType.isString(term.field().dataType());
         } else if (exp instanceof FullTextFunction) {
             return true;
         }

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/optimizer/LocalPhysicalPlanOptimizerTests.java

@@ -1450,11 +1450,6 @@ private void checkMatchFunctionPushDown(
         var analyzer = makeAnalyzer("mapping-all-types.json");
         // Check for every possible query data type
         for (DataType fieldDataType : fieldDataTypes) {
-            // TODO: semantic_text is not present in mapping-all-types.json so we skip it for now
-            if (fieldDataType == DataType.SEMANTIC_TEXT) {
-                continue;
-            }
-
             var queryValue = randomQueryValue(fieldDataType);
 
             String fieldName = fieldDataType == DataType.DATETIME ? "date" : fieldDataType.name().toLowerCase(Locale.ROOT);